Develop Bugs

[Root] [CWM] Samsung Galaxy Discover (SGH-730G) Tracfone Variant ONLY

THIS THREAD IS ONLY FOR THE SGH-730G VARIANT OF THE SAMSUNG DISCOVER. USE OF ANY OF THESE GUIDES AND METHODS FOR ANY OTHER VARIANT OF THE PHONE IS AT THE RISK OF THE USER
This thread is a guide on how to root and install CWM recovery on the Samsung Galaxy Discover (SGH-730G) which is the Tracfone (Net10, Straight Talk) variant of the device. These instructions are for Windows users only. If someone knows how to do it through Linux distro or Mac, please let me know and we will add those instructions to this post.
IMPORTANT: THIS GUIDE ASSUMES THAT YOU HAVE A PRIOR KNOWLEDGE OF THE TOOLS AND TERMS USED. ROOTING YOUR DEVICE WILL VOID YOUR WARRANTY! STOP NOW IF THIS IS SOMETHING YOU ARE CONCERNED ABOUT! IF YOU PROCEED, FOLLOW ALL THE DIRECTIONS CAREFULLY. USE OF THIS GUIDE AND THESE TOOLS IS AT THE RISK OF THE USER! I AM NOT RESPONSIBLE FOR ANY DAMAGE OR NEGATIVE OUTCOMES INCLUDING BUT NOT LIMITED TO SOFT BRICK, HARD BRICK, EXPLODING BATTERIES, NUCLEAR WAR, GIANT SQUID PEOPLE, OR SPONTANEOUS JUSTIN BIEBER CONCERTS IN YOUR LIVING ROOM
***First let's get all the tools and files you will need to complete this process***
Samsung USB Drivers: Click HERE to download the USB drivers for the SGH-730G.
UnlockRoot Pro (Free Download) - Click HERE and scroll down to "UnlockRoot Pro" and click the "Free Download" button. *Note*: Your computer may tell you that this program is malicious. You may have to disable antivirus in order to download.
Odin3 v3.07 - Click HERE to download Odin. This program will be used to flash CWM recovery to your phone.
CWM Recovery (thanks to JohnnyGalto) - Click HERE to download CWM recovery for your phone.
***Now that you have all the tools downloaded let's get them installed and ready for use.***
1) Install the USB drivers (should be self-explanatory).
2) Click on UnlockRoot_downloader_by_UnlockRoot.exe to start the installation. You may have to grant it administrator privileges. I DO NOT RECOMMEND INSTALLING ANY OF THE SPECIAL OFFERS THAT FIRST COME UP WHEN YOU OPEN THE FILE. CLICK SKIP until the automatic download begins. This is the download for the program itself. Once that is finished, follow the instructions to install the program on your computer.
3) Extract Odin Files: I recommend creating a folder on the desktop named "Odin" simply for easy access. However, feel free to choose whatever directory you want. Simply extract all the files to a designated folder.
4) CWM Revovery Tar: Move this file into the same folder where you extracted Odin. This will make it easier to access in a little while.
***If you have followed all the instructions correctly, you are now ready to install CWM recovery and root your device! You will periodically see a yellow triangle on the Samsung boot logo screen throughout this process. But have no fear, we will take care of this later on.***
1) Put your phone into download mode by holding VOLUME DOWN + POWER. A warning screen about custom OS will appear. Press VOLUME UP to confirm this is what you want to do. You should then be showing a screen with the Android logo and the "Downloading... Do not turn off target!!" text.
2) Now connect your phone to the computer using the USB cable, and open Odin from the folder you extracted it to. If your phone is connected properly you should see something similar to "0:[COM10]" in the box under ID:COM in the upper left of the window.
**VERY IMPORTANT** MAKE SURE THE ONLY TWO BOXES CHECKED UNDER "OPTIONS" ARE AUTO REBOOT AND F. RESET TIME!! NO OTHER BOXES SHOULD BE CHECKED
3) Under "Files [Download]" click the PDA button. Navigate to where you placed the CWM tar file and click okay.It is important that you ONLY click "PDA" for this. If you have followed the directions carefully, Odin should check the MD5 sum of the file to verify validity. If the file comes back invalid or you get any errors, STOP, and report them in the thread.
4) Click "Start". DO NOT TURN OFF OR DISCONNECT YOUR PHONE DURING THIS PROCESS. If everything goes well, your phone will reboot automatically after install. To check if your install worked properly, follow the next instructions to boot into recovery and make a stock backup.
OPTIONAL BUT RECOMMENDED SAFETY STEP BEFORE PROCEEDING WITH ROOT (REQUIRES AN EXTERNAL MICRO SD CARD) - CWM recovery works without root permission. It is HIGHLY recommended that you make a complete backup of your stock image before proceeding. This will make it easier to recover from a soft brick, or to return your phone to stock in the future should you choose to do so. A)Power off your phone. To boot into recovery, hold VOLUME UP+POWER until the Samsung logo is displayed. After the logo displays, release the POWER button. Keep holding the VOLUME UP button until your phone boots into the CWM recovery screen. B) Using the volume keys to navigate the menu, scroll down to "backup and restore". Use the power button to select. C) Select backup using the power button. D) After your backup is complete, go back to the main menu and select "reboot system now".
5) Before using UnlockRoot Pro, go to your Settings menu and scroll down to "Developer Options". Be sure to select "USB debugging", "Allow mock locations", and just to avoid potential disaster, choose "Stay awake". After this is all done, you can go back and unselect these.
6) With USB debugging enabled on your phone, launch UnlockRoot (not the UnlockRoot PRO shortcut the program installs on the desktop). Click the big green "Root" button. **NOTE** During the process it will ask you if you want to install other apps. DO NOT INSTALL THEM. Once the program is finished, if all went well, you now have a rooted SGH-730G!
7) There are a number of apps available in the Play Store that check to see if you are rooted. Alternatively, this is how I check my devices. A) Download and install "Terminal Emulator" from the Play Store. This app is like using ADB on your phone. B) Once it is installed, open the app. Type in the command "su" (without the quotes) and hit enter. If rooting was successful, your phone should show a pop-up message asking you to grant it root privileges. Go ahead and say yes and rejoice in the fact you were successful. If you receive the error "permission denied", then the root was unsuccessful.
**Dealing with the pesky yellow triangle on the Samsung boot screen**
The yellow triangle on the Samsung boot screen is a visual warning that you are running custom software. To get rid of it, click the following thread link. "Triangle Away" is a paid app in the Play Store, but the awesome Chainfire has made it available in the forums. Read the thread carefully and follow all the instructions for using the app. Neither I, nor him, nor your pet are responsible for the misuse of the app. - http://forum.xda-developers.com/member.php?u=631273
THAT'S IT!!! If you followed all the directions carefully, you now have a rooted SGH-730G and the sky is the limit now. Currently there is no known custom roms for this device. However I am working on building a Stock+Root Deodexed version of the factory firmware, and will upload it when I can verify it is stable to be released. Following that, I will be developing a custom rom based on the stock firmware. But of course, if you have the experience and know-how, feel free to start developing your own roms for this phone. The more the merrier.
And as always, if you were successful using this guide, or it helped you in any way, please inflate my ego by clicking that thanks button.
I will try to answer as many questions as possible if you run into problems during the process, or if you have other questions about what you can do with this device now that it is rooted.
I CURRENTLY DO NOT KNOW OF A WAY TO MANUALLY UNLOCK THE PHONE. IT'S A LITTLE BIT BEYOND MY SKILLS. I HAVE HOWEVER SEEN PEOPLE IN OTHER FORUMS GETTING PEOPLE TO DO IT USING REMOTE ACCESS TO THEIR COMPUTERS WITH THE PHONE PLUGGED IN TO IT. I DON'T KNOW ALL THE DETAILS ABOUT HOW IT WORKS, BUT COMMON SENSE TELLS ME THIS ISN'T A VERY TRUSTWORTHY THING TO BE DOING. IT'S TOTALLY UP TO YOU IF YOU REALLY TRUST A COMPLETE STRANGER TO HAVE VIRTUAL ACCESS TO YOUR COMPUTER AND YOUR PHONE. BE I'D BE WEARY.
:good: Thanks (in no particular order) to andronald for the original thread about the 730M variant of this device, Without that thread, this thread would not be possible. FitAmp for his contributions to the project over there, JohnnyGalto for the CWM recovery image, cshmitt for his help in getting me started working on a custom rom for this device. :good:

Soft Brick Recovery
SOFT BRICK RECOVERY FOR SGH-730G
Right now, I am working on a tar Odin flashable system image to make it easier to recover from a soft brick of the device. Once it is completed and tested, I will update this post to include a download of it.
***This post will help you recover from a soft brick or bootloop error on your SGH-730G after rooting. This quick guide assumes that you still have access to CWM recovery and/or are able to boot into download mode. (See OP for instructions on how to boot into recovery and download mode.)***
If you followed the instructions and recommendations in the previous post, then you should have made a backup of the stock image using CWM recovery. This is what you will use to help recover your phone so you can start the process again, or not, depending on how gutsy you feel.
IF YOU ARE STILL ABLE TO BOOT INTO CWM RECOVERY
1) Power off your device. You may have to pull the battery to do this if you are stuck with a bootloop or other booting issues.
2) Boot into CWM recovery (see OP for instructions)
3) Scroll down to "backup and restore"
4) Select restore
5) You should then see a restore point to select. The format is usually "YYYY-MM-DD.HOUR". The hour is usually in 24h format.
6) Select the file then select "Yes".
7) If everything works correctly, your stock backup should be restored and you should be able to boot your phone again.
**Note** If you lose root while restoring your stock backup, just use the guide in the OP to try again.
**If you cannot boot into CWM recovery after installation and making a backup.**
Try to reinstall the CWM recovery image using the instructions in the OP.
Again, as soon as it is ready, I will upload a tar that can be flashed through Odin to restore the factory image to your phone, and instructions on recovering and returning to stock will be posted here.
As always, if this helps you in any way, inflate my ego by clicking that thanks button.

Fun with the SGH-730G
So far there are a few fun things I have found work for this phone so far.
For those who may want overclock features, check out this thread. The reason I didn't include it in the OP is because I didn't have success in changing the max value for CPU speed. It stayed constant at 1000 and produced a little too much battery drain for my taste.
SetCPU - This app only works to change the minimum allowed CPU speed of the stock kernel. I run the "ondemand" settings with a minimum of 600MHz and max of 800Mhz. This has helped to reduce some lag from the stock speeds the kernel likes to run and doesn't produce a noticeable battery drain.
Seeder - The seeder lag reduction app makes a huge difference in smoothness of the device.
Xposed Framework: If you don't know what this is, search the XDA forums and you will be able to learn just about everything you want about it. So far I have tested features of the XBlast module and Xposed Additions. Center clock and clock color change, 4-way reboot menu with screenshot, Volume button tweaks, all from Xblast. Xposed Additions can be used to remap the buttons for different functions. I was able to remap the back key to kill the foreground app on long-press. Very useful to limit the amount of running apps in the background.
Notification Toggle - This nifty little app allows you to place toggles for wifi, mobile data, brightness, etc, in the notification dropdown screen. Saves a little time from having to navigate through the settings on the phone, and saves home screen space by not having to use the power widget.
Rom Toolbox - Some features may work, but it is better to have the rom deodexed to take full advantage. (A deodexed version of the stock rom will be available soon).
Auto Killer Memory Optimizer: This is a personal favorite of mine. I own the pro version which is well worth the money. It allows custom settings to optimize RAM usage and free up memory. Makes the phone so much smoother.
If you find any other fun mods that work with this phone, pleas share!

Thank you very much. Been waiting for this for a while. Again thanks.

Nomad692000 said:
Thank you very much. Been waiting for this for a while. Again thanks.
Click to expand...
Click to collapse
My pleasure. I felt it was necessary to separate this phone version from the other versions to avoid confusion. I'll be (hopefully) updating the soft brick recovery in just a moment. Currently testing a new method. Glad you liked the thread. Stick around, things may start to get interesting soon

So far I haven't had any luck creating an Odin package of the factory system image. I have written to Tracfone to see if they could provide me with the factory image but I'm not going to have high hopes it will happen.
Hopefully this week I will be able to provide a deodexed and debloated version of the stock rom that will run a little faster and take up a little less space on the device.
A custom kernel is in the works for those interested in overclocking, though I think anything past the stock max speed will cause a good amount of battery drain.
Sent from my SGH-S730G

So you building a custom rom for the tracfone version (730G)?

(Dominix) said:
So you building a custom rom for the tracfone version (730G)?
Click to expand...
Click to collapse
Slowly but surely yes. Haven't gotten as much done this week as I had hoped but it is in the works.
Sent from my SGH-S730G

i need stock rom please
TheGeekyNimrod said:
Slowly but surely yes. Haven't gotten as much done this week as I had hoped but it is in the works.
Sent from my SGH-S730G
Click to expand...
Click to collapse
i mistakingly picked up the wrong phone..the discover and the centura are very similar....i accidently installed custom rom for the centura onto the discover...it is the 730g. i did not make a back up...do you have the stock rom and can you post or email it to me?? [email protected]
:crying:

j.nunez123 said:
i mistakingly picked up the wrong phone..the discover and the centura are very similar....i accidently installed custom rom for the centura onto the discover...it is the 730g. i did not make a back up...do you have the stock rom and can you post or email it to me?? [email protected]
:crying:
Click to expand...
Click to collapse
Right now I do not have a copy of the stock rom. I'm still trying to create an Odin flashable of the basic system partition files, recovery, and boot. Wish I could help you. This is why it's always important to make a backup. You might can try one of the 730M Discover threads and see if someone can send you a back up of theirs, but keep in mind that is the Canadian version of the phone. I'm not quite sure what all of the differences in them are.

Based on what I have been able to find out, other than the tracfone custom boot screen and sound, the android on this phone is just stock android 4. No touchwiz (thank God and all that it holy) no bloatware extras, no nothing. So you could probably take the stock Android 4.0.4 I think it is and work from that.
Sent from my SGH-S730G using xda app-developers app

little trouble
Ive downloaded everyting just fine, but when I try and install the unlockroot it keeps telling me Better installer host has stopped working. Is that something on my end or something on theirs? because i cant seem to figure anything out about better installer and have never seen it before downloading this. You have any suggestions on what is causing this problem?

[sgh-s730g] Discover Straight talk PR Rooted
I will reccomend you to start over as it is in [Root] [CWM] Samgsung Galaxy Discover (SGH-730G) Tracfone Variant ONLYthread, which is in the first page. Do a factory reset if it can be done, and wipe all the catches. format your sd card and be patient, because i followed all the instructions and mine works fine. the only thing i haven't done is get rid of the yellow triangle but I'll doit later on because I'm Working to find the unlocking code for mine. Wish you luck and do be afraid. Just be Patient :good:

Cristiandando said:
I will reccomend you to start over as it is in [Root] [CWM] Samgsung Galaxy Discover (SGH-730G) Tracfone Variant ONLYthread, which is in the first page. Do a factory reset if it can be done, and wipe all the catches. format your sd card and be patient, because i followed all the instructions and mine works fine. the only thing i haven't done is get rid of the yellow triangle but I'll doit later on because I'm Working to find the unlocking code for mine. Wish you luck and do be afraid. Just be Patient :good:
Click to expand...
Click to collapse
I am getting this error on my computer not on my cell phone, My cell is a discover from straight talk. when i downloaded unlockroot from their website onto my computer and go to run it it wont even install. just keeps saying better installer stopped working. Again this is on my computer not on my cell phone.

Uninstall then re-download UnlockRoot .. I had that problem first time I tried to run it. Also, there is the actual free program, amd another program file that pulls up an order and download program for the pro version. Maybe you clicked that one instead?
Sent from my SGH-S730G

I have a debloated, deodexed, zip aligned, rooted version of the stock rom completed. Working on the updater script which is being a pain in my ass. Soon as it is done and tested I'll post it.
I've been behind on it as my volunteer work and family obligations have been my primary focus. But it is something I still try to work on to give this phone a little boost.
Sent from my SGH-S730G

Here it's what you're looking for my Friend
pokesmot88 said:
I am getting this error on my computer not on my cell phone, My cell is a discover from straight talk. when i downloaded unlockroot from their website onto my computer and go to run it it wont even install. just keeps saying better installer stopped working. Again this is on my computer not on my cell phone.
Click to expand...
Click to collapse
Il' PM you the unlock root pro with the serial because I can't post it until I make 10 or more post. Download both items, install the software and then copy > paste the serial and start rooting your phone. Don't forguet to make a back up of your original not rooted rom and save it in your computer and sd card in case something goes wrong just restore it to it's original state.

TheGeekyNimrod said:
I have a debloated, deodexed, zip aligned, rooted version of the stock rom completed. Working on the updater script which is being a pain in my ass. Soon as it is done and tested I'll post it.
I've been behind on it as my volunteer work and family obligations have been my primary focus. But it is something I still try to work on to give this phone a little boost.
Sent from my SGH-S730G
Click to expand...
Click to collapse
I have a SGH-S730M that I bought unlocked off of ebay, and wound up giving it to my wife. After looking at the specs for the SGH-S730G it sounds like they are identical other than one being sold by Telus and the other being sold by net10. Is the SGH-730G unlocked by default? I'm interested in getting one to try my hand at modifying. One of my few key complaints about the SGH-S730M was that even though it didn't have the touchwiz launcher it still had the samsung style lock screen instead of the stock ICS lock screen. Would xposed or any of the other stuff you mentioned allow me to change that back to stock?
Also the battery issue you mentioned also seems to affect the S730M as well, it is more than a little annoying.

doctor_evil said:
I have a SGH-S730M that I bought unlocked off of ebay, and wound up giving it to my wife. After looking at the specs for the SGH-S730G it sounds like they are identical other than one being sold by Telus and the other being sold by net10. Is the SGH-730G unlocked by default? I'm interested in getting one to try my hand at modifying. One of my few key complaints about the SGH-S730M was that even though it didn't have the touchwiz launcher it still had the samsung style lock screen instead of the stock ICS lock screen. Would xposed or any of the other stuff you mentioned allow me to change that back to stock?
Also the battery issue you mentioned also seems to affect the S730M as well, it is more than a little annoying.
Click to expand...
Click to collapse
They are pretty much the same device yes. The 730G I bought was through StraightTalk so it wasn't unlocked. I'm sure you could find one unlocked on Ebay or maybe Swappa or something similar. I do hate the Samsung stock lockscreen too. Stock, Xposed won't do the AOSP lockscreen style. Once I have the deodexed working and ready it should. There is another way to bring it up, but it's a little beyond my experience, but also requires a deodexed system.

TheGeekyNimrod said:
They are pretty much the same device yes. The 730G I bought was through StraightTalk so it wasn't unlocked. I'm sure you could find one unlocked on Ebay or maybe Swappa or something similar. I do hate the Samsung stock lockscreen too. Stock, Xposed won't do the AOSP lockscreen style. Once I have the deodexed working and ready it should. There is another way to bring it up, but it's a little beyond my experience, but also requires a deodexed system.
Click to expand...
Click to collapse
Cool I will be watching this thread for updates. I just bought a used SGH-730G that I am willing to do test flashes on the rom if you need a tester. I got it for a super super cheap price so I won't get upset if it gets bricked.

VK810 Root and ROM Successful

I felt compelled to register here and post my success on getting LineageOS installed on my Verizon VK810 4G Altev LG G Pad tablet. It would not have been possible without this forum and the users who contribute, both with information and with uploads. I initially tried rooting with KingRoot and the OTA updated OS I had from Verizon but the app said there were 63 requests for rooting my device. Forget that idea. After also trying iRoot which wasn't working, I used the LG Flash Tool to downgrade to VK81035A and then was successfully able to root that. SuperSu definitely helped with the process. My guess is, even though both were Android 5.0.2, mine had OTA patches that I guess caused issues for rooting. Installing TWRP was a hassle though. None of the v500 TWRP images worked for me and many of the custom TWRP versions that I found on here did not work for me. You would not imagine the number of times I thought I bricked my device because I kept getting "Secure Booting Error! Cause: boot certification verify" errors. However, what did work for me was, using Platform-tools and VK810_twrp_2.7.0.1.zip for TWRP. For some reason, the other versions posted here did not work for me. It did take me a while to figure out how to get into TWRP because I kept using the Power-VolUp key combinations and it kept bringing me to what looked like LG's recovery menu. I didn't realize that the screen is actually fake and you have to click "Factory Reset/Wipe" on there to get into TWRP. It actually took me a long time to figure that out. With TWRP installed, I searched for ROMs that I could use that were newer than Android 5.0.2 and ended up downloading LineageOS as it came up for the VK810 and since VS500 ROMs weren't allowed to be installed. Now to be fair, the LineageOS Rom that I used (lineage-14.1-20171228_233442-UNOFFICIAL-vk810.zip) is pretty glitchy. The display likes to blink a lot, many apps crash on it and there is no cellular data working for me, but I assume that will possibly be fixed in the future and at least now, I can customize more than I could on stock. On first install, I also lost my root and forgot to install the GApps package from the Lineage website. Anyway, hope this helps at least one person here. Nothing was one-click for me, but I did learn a lot about the process of rooting and flashing, and now better than to automatically allow OTA updates. I do hope LineageOS or another ROM keeps updating for the VK810 because this tablet does not seem that popular and I would like to see Oreo. Thank you everyone for your help!

XDAnonymous said:
I felt compelled to register here and post my success on getting LineageOS installed on my Verizon VK810 4G Altev LG G Pad tablet. It would not have been possible without this forum and the users who contribute, both with information and with uploads. I initially tried rooting with KingRoot and the OTA updated OS I had from Verizon but the app said there were 63 requests for rooting my device. Forget that idea. After also trying iRoot which wasn't working, I used the LG Flash Tool to downgrade to VK81035A and then was successfully able to root that. SuperSu definitely helped with the process. My guess is, even though both were Android 5.0.2, mine had OTA patches that I guess caused issues for rooting. Installing TWRP was a hassle though. None of the v500 TWRP images worked for me and many of the custom TWRP versions that I found on here did not work for me. You would not imagine the number of times I thought I bricked my device because I kept getting "Secure Booting Error! Cause: boot certification verify" errors. However, what did work for me was, using Platform-tools and VK810_twrp_2.7.0.1.zip for TWRP. For some reason, the other versions posted here did not work for me. It did take me a while to figure out how to get into TWRP because I kept using the Power-VolUp key combinations and it kept bringing me to what looked like LG's recovery menu. I didn't realize that the screen is actually fake and you have to click "Factory Reset/Wipe" on there to get into TWRP. It actually took me a long time to figure that out. With TWRP installed, I searched for ROMs that I could use that were newer than Android 5.0.2 and ended up downloading LineageOS as it came up for the VK810 and since VS500 ROMs weren't allowed to be installed. Now to be fair, the LineageOS Rom that I used (lineage-14.1-20171228_233442-UNOFFICIAL-vk810.zip) is pretty glitchy. The display likes to blink a lot, many apps crash on it and there is no cellular data working for me, but I assume that will possibly be fixed in the future and at least now, I can customize more than I could on stock. On first install, I also lost my root and forgot to install the GApps package from the Lineage website. Anyway, hope this helps at least one person here. Nothing was one-click for me, but I did learn a lot about the process of rooting and flashing, and now better than to automatically allow OTA updates. I do hope LineageOS or another ROM keeps updating for the VK810 because this tablet does not seem that popular and I would like to see Oreo. Thank you everyone for your help!
Click to expand...
Click to collapse
Wow thank you so much I thought it was me having issues. I have a 410vk and as you said nothing was one click. I hope to continue to try and get root on the G Pad. Still an awesome device.
Sent from my LG-H932 using Tapatalk

XDAnonymous said:
I felt compelled to register here and post my success on getting LineageOS installed on my Verizon VK810 4G Altev LG G Pad tablet. It would not have been possible without this forum and the users who contribute, both with information and with uploads. I initially tried rooting with KingRoot and the OTA updated OS I had from Verizon but the app said there were 63 requests for rooting my device. Forget that idea. After also trying iRoot which wasn't working, I used the LG Flash Tool to downgrade to VK81035A and then was successfully able to root that. SuperSu definitely helped with the process. My guess is, even though both were Android 5.0.2, mine had OTA patches that I guess caused issues for rooting. Installing TWRP was a hassle though. None of the v500 TWRP images worked for me and many of the custom TWRP versions that I found on here did not work for me. You would not imagine the number of times I thought I bricked my device because I kept getting "Secure Booting Error! Cause: boot certification verify" errors. However, what did work for me was, using Platform-tools and VK810_twrp_2.7.0.1.zip for TWRP. For some reason, the other versions posted here did not work for me. It did take me a while to figure out how to get into TWRP because I kept using the Power-VolUp key combinations and it kept bringing me to what looked like LG's recovery menu. I didn't realize that the screen is actually fake and you have to click "Factory Reset/Wipe" on there to get into TWRP. It actually took me a long time to figure that out. With TWRP installed, I searched for ROMs that I could use that were newer than Android 5.0.2 and ended up downloading LineageOS as it came up for the VK810 and since VS500 ROMs weren't allowed to be installed. Now to be fair, the LineageOS Rom that I used (lineage-14.1-20171228_233442-UNOFFICIAL-vk810.zip) is pretty glitchy. The display likes to blink a lot, many apps crash on it and there is no cellular data working for me, but I assume that will possibly be fixed in the future and at least now, I can customize more than I could on stock. On first install, I also lost my root and forgot to install the GApps package from the Lineage website. Anyway, hope this helps at least one person here. Nothing was one-click for me, but I did learn a lot about the process of rooting and flashing, and now better than to automatically allow OTA updates. I do hope LineageOS or another ROM keeps updating for the VK810 because this tablet does not seem that popular and I would like to see Oreo. Thank you everyone for your help!
Click to expand...
Click to collapse
Can you link where you got the ROM? Is anyone actively working on it? Really too bad the vk810 never got much love, great little device. Been awhile since I've done anything with it, it's my dad's so I got it rooted on 5.0.2 and just kinda left it alone. What prompted me to come back to this forum is screen mirroring won't work. The tablet sees TV and vice versa, it tries to connect but never completes the connection, just kicks back to satellite TV after a couple of seconds of black screen. Don't suppose you tried casting on that lineage build?

AirForceOnes0010 said:
Can you link where you got the ROM? Is anyone actively working on it? Really too bad the vk810 never got much love, great little device. Been awhile since I've done anything with it, it's my dad's so I got it rooted on 5.0.2 and just kinda left it alone. What prompted me to come back to this forum is screen mirroring won't work. The tablet sees TV and vice versa, it tries to connect but never completes the connection, just kicks back to satellite TV after a couple of seconds of black screen. Don't suppose you tried casting on that lineage build?
Click to expand...
Click to collapse
I got the ROM from the Invisiblek ROMS site under /roms/lineage-14.1/vk810/ (Can't post the link as I'm currently under 10 posts)
It's definitely a start. There is screen glitching, and no LTE service (Wi-Fi only), so it definitely limits the tablet. I have not done much with it as it was a hassle just to get the root within the OS to work correctly. Some apps aren't detecting root when the OS is trying to give it to them.

XDAnonymous said:
I got the ROM from the Invisiblek ROMS site under /roms/lineage-14.1/vk810/ (Can't post the link as I'm currently under 10 posts)
It's definitely a start. There is screen glitching, and no LTE service (Wi-Fi only), so it definitely limits the tablet. I have not done much with it as it was a hassle just to get the root within the OS to work correctly. Some apps aren't detecting root when the OS is trying to give it to them.
Click to expand...
Click to collapse
It'll have to wait until/if LTE is ever functional then, my parents don't have internet other 4g out in the sticks lol. Google took me right to it, thanks. Will keep it bookmarked just in case

I'd like to write about my experience too as it took me some time to finally get the device up and running.
I will describe what I wanted to do, what mistakes I've made and what should've been the correct way.
The device itself is LG G Pad 8.3, Verizon LTE variant aka vk810
Initally I received it in a bricked state, on launching it showed the "Secure booting error" message and that's it.
1) Unbricking
The goal was to install an official LG system image and restore the tablet to a working state.
Basically, I did everything according to the steps outlined here: https://forum.xda-developers.com/lg-g-pad-83/general/vk810-4g-reliable-to-root-install-t3283027
Installed LG drivers
Downloaded the LG Flash Tool 2104
Downloaded a KDZ image
Plugged the device in the download mode into the PC and installed the KDZ using the flash tool
At that point I got a fancy idea to install a non-stock Android on this tablet.
2) Lineage OS
I chose this OS for my tablet, because it seems to be the current standard for non-stock Android installations.
I followed these installation instructions: https://wiki.lineageos.org/devices/v500/install
BEWARE: that page is for v500, so it won't work for vk810.
Lineage doesn't support vk810 officially. A mistake I've made was assuming that I can just roll along with a v500 installation. Actually, you kinda can, but for me it resulted in Wi-Fi not working and my device's MAC address being 02:00:00:00:00:00.
3) Rooting
I was quite confused here too: there are different rooting methods, and some of them can be applied in different ways.
Ultimately I found Stump to be the most comfortable for me: https://forum.xda-developers.com/lg...root-stump-root-lg-g3-sprint-verizon-t2850906
It works fine on this device and uses a very straightforward process: download APK to your PC, connect the tablet to the PC, "adb install <filename>.apk", then launch the app and that's it. It had to go through the bruteforce process to root, which took several minutes.
4) TWRP
I don't remember what exact TWRP I installed initially, but it was a 3.x version, and I encountered an issue where it couldn't mount any of the tablet's partitions. That was quite a pain in the ass.
For a while I resorted to using an older version, 2.7.x, and it worked fine.
Ultimately what I'm the most happy with is this: https://forum.xda-developers.com/lg-g-pad-83/general/vk810-twrp-3-1-1-0-unofficial-t3691551
The lesson learned here is that, again, you need to make sure stuff you install is compatible with your device.
Ultimately, after making mistakes at each step of the process, I figured out everything, and just followed the installation instructions on the Lineage page I linked earlier.
* Flash stock rom
* Root using Stump
* Enable USB debugging on the tablet, install Stump via adb and root the device
* Install vk810 variant of TWRP 3.2.1-0 via adb
* Reboot to recovery (turn off the tablet -> hold Volume Down + Power -> you should get a factory reset menu after the LG logo -> select factory reset, then confirm it and you'll be booted into TWRP. That factory reset is fake after you have TWRP installed)
* Wipe everything
* adb push the lineage / lineage's su / opengapps onto the device
* Install lineage, then su and opengapps and you're good to go
Main lesson learned: it is CRUCIAL to make sure stuff you install is compatible with your particular device. Do not assume that you can use another version, even if it is made for a device of the same family.

Just to provide an update here, this is where the ROM that I used came from: https://updater.invisiblek.org/vk810
The latest version at this time seems to be this: lineage-17.1-20200329-UNOFFICIAL-vk810.zip

XDAnonymous said:
Just to provide an update here, this is where the ROM that I used came from: https://updater.invisiblek.org/vk810
The latest version at this time seems to be this: lineage-17.1-20200329-UNOFFICIAL-vk810.zip
Click to expand...
Click to collapse
Thanks for all the great information, but I have the VK810 that has usb connection problems. It will connect, but it keeps dropping (it cannot be trusted with usb cord). I have wanted to root, twrp, magisk and other things just to play around to see what it can do or how far I can go with it. I am not afraid to trash it. Have you or anyone else had this problem? I have reset it, wiped it out, factory settings, but nothing seems to help that usb port. I was thinking that reflashing the rom might help. Any advice is appreciated.

[HELP][G3][VS985]issue connecting to PC on fastboot, need to reflash TWRP & SuperSU

[HELP][G3][VS985]issue connecting to PC on fastboot, need to reflash TWRP & SuperSU
Hello, thank you for this great forum with helpful members, I'm having an issue with an LG G3 VS985, fastboot won't recognize it while in bootloader, I need to reflash TWRP.
First of all, thank you for reading this long testament [most important details in bold if TL;TR], wanted to be as detailed as possible, maybe it will help you help me better hehe sorry about that.
Let me give you the event sequence if it helps.
> Phone had Cloudy G3 2.5 rooted with SuperSU and TWRP 2.8.6.0 since I rooted it back in 2016.
I was having some issues with phone not recognizing micro sd card and OTG-USB after messing around with encrypting it, I was curious but didn't need it, anyways. Although I dropped the phone in water a couple weeks prior so there is a chance the issue is hardware related.
That was like 4-5 months ago.
Finally decided to do a file backup and reinstall everything yesterday apr-5-2019.
> Rebooted into TWRP and erased everything (data, cache, dalvik, system, even internal storage) because I wanted a new install on everything.
> Flashed the latest official TWRP version for my device (3.0.2.0)
> Had a lot of issues flashing crDroid, found out I downloaded the wrong build, although I had to edit updater-script on the right one to make it work.
> Flashed crDroid 5.2_20190326 with open GApps for Android 9.0 Stock
> First issue encountered, I couldn't charge the phone turned off, because the battery logo appears but but doesn't do the animation and reboots the phone, I read it might be an issue with TWRP.
> Tried to flash SuperSU 2.82 SR5 with TWRP but had a LG secure boot error and couldn't boot up android.
> RE-flashing android and open GApps fixed this issue.
> Re-attempted the process several times, even wiping everything down more than a couple times, including re-flashing android several times to no avail, I was not able to flash SuperSU successfully.
I even flashed an old tool "MR.Bump" but system kept unrooted so unsuccessful.
> Reflashed Android for the last time and start reading again (after 8 hours attempting to do it well), I read that TWRP version might be the problem to flash SuperSU, so
HERE is where I have the current issue:
> Downloaded the official TWRP version 3.1.0 and flashed it.
There is no official support for 3.1.0 for the VS985 so I'm guessing it was a generic .img, of course I messed up TWRP.
> Downloaded and installed official LGMobile Drivers 4.2.0 (latest), downloaded android drivers (15 second ADB installer 1.4.3) and Android platform tools 28.0.2 on windows.
> When conected in PTP and transfer files in win7 it recognizes all the drivers well, was able to reboot the phone into bootloader from android platform tools successfully, means there is good communication between the device and PC.
The issue is once the phone is in the bootloader and trying to flash TWRP, win7 has issues installing CDC serial drivers, in the end in device manager all drivers seems installed but win notification center says there was a problem installing LGE AndroidNet for VZW USB Modem, seems to be issues with CDC Serial or something, when trying to access the properties on the VZW USB Modem it freezes so there's an issue here.
That means when doing adb devices or fastboot devices command, doesn't find anything.
Tried the same in win10, had different driver problems but in the end everything gets installed after rebooting. Same issue, no response from phone when in bootloader.
Message is "Waiting for any device".
Maybe there is an issue with some low-level driver/kernel/firmware that is creating this issue, I would even consider to flash stock LG Android to start from scratch, if you have any guide on how to do it please provide the links!
Additional note: When connecting the phone in USB Tethering win7 gives bluescreen.
> FORTUNATELY I messed TWRP but the phone can still boot android so it's not rendered unusable (yet lol).
I must admit I wasn't super careful downloading some stuff, I did it old school (trial and error) and most of the times it works, I consider myself being a little tech savvy, but right now I'm stuck, I guess I could continue using the phone like this but if I have any issues it would be difficult to resolve and I would lose functionality without root (I could live unrooted though but I wanna resolve this) and honestly I love the G3 so why change it? haha.
BTW I found these on the net, do you recommend it? what TWRP do you recommend for the VS985?
I downloaded and wanted to install this one https://forum.xda-developers.com/lg-g3/development/recovery-unofficial-multirom-twrp-artx-t3657524
and found this one supposedly 3.2.1 for the vs985 here: https://basketbuild.com/devs/yshalsager/TwrpBuilder/lge/vs985
Any help will be greatly appreciated.
Cheers.
I posted it on a different area and got no response, so here it is the G3 area.

@disrupted_mind, wow, that was a great detailed post. Alas, can't think of anything much to suggest at the moment. Just a few things come to mind.
Make sure to use a USB 2.0 port on the computer. I've heard of issues with USB 3.0.
Use a good cable but I assume yours is good or original.
There's another TWRP from @HardStyl3r, v3.2.3. Since he's one of our last ROM devs I'm sure it might be the one to use, especially if you're trying Pie.
https://forum.xda-developers.com/showthread.php?t=3813552
[RECOVERY][3.2.3.0][UNOFFICIAL] TeamWin Recovery Project for LG G3
Let us know if that one works or not.
LG G3 D851, AOSPA-L ROM, Nebula Rev9.3 Kernel, microG (NoGapps), MultiROM, XDA Legacy

marcdw said:
@disrupted_mind, wow, that was a great detailed post. Alas, can't think of anything much to suggest at the moment. Just a few things come to mind.
Make sure to use a USB 2.0 port on the computer. I've heard of issues with USB 3.0.
Use a good cable but I assume yours is good or original.
Click to expand...
Click to collapse
Thank you for replying, now that you mention it, all the ports on the PC's I've tried are USB 3.0, I think I have an older lappy with USB 2.0 and I will try that next. If that doesn't work I was planning on rooting the phone temporarily with kingroot or kingoroot, so I can use flashify and re-flash TWRP (just thought about it last night hehe) and then re-flash the ROM since according to this thread, kingroot and kingoroot might be malware.
marcdw said:
There's another TWRP from @HardStyl3r, v3.2.3. Since he's one of our last ROM devs I'm sure it might be the one to use, especially if you're trying Pie.
https://forum.xda-developers.com/showthread.php?t=3813552
[RECOVERY][3.2.3.0][UNOFFICIAL] TeamWin Recovery Project for LG G3
Let us know if that one works or not.
LG G3 D851, AOSPA-L ROM, Nebula Rev9.3 Kernel, microG (NoGapps), MultiROM, XDA Legacy
Click to expand...
Click to collapse
Thanks, yes, precisely yesterday I kept reading trying to find a solution and bumped into @HardStyl3r's version, already downloaded it
I like Pie very much by the way, but I think it drains the battery a little faster than CloudyG3 (android 5), maybe the old hardware struggles too much haha, but I will keep using it for some time. By the way, do you think AppOps is still necessary with Android integration to allow/deny permissions (sorry, noobie question since I'm just transitioning from old to newer android with that feature).
Any ideas on the charging the phone off issue?
I will update the thread with any news
Cheers.

I have good news and bad news.
I was able to reflash stock KitKat using TOT method, only way it could work since I had no connection to PC with fastboot commands on cmd.
Updated android over the air and PC, it update to 5.0.1 over the air and wanted to go faster so tried to do it from PC, what a mistake, when I was downloading Marshmallow info on xda I found that it might be difficult to root android 6, so cancelled the operation from LG Update Software on PC. That went "fine", didn't update to Marshmallow.
Rooted the phone using the One-Click root method, worked fine apparently. Installed flashify and flashed the Unofficial 3.2.3 TWRP, that didn't go well, I dont have access to Recovery mode nor Bootloader/Download mode now. "Recovery" ("vol-" + "Power Button") mode gives "certificate/secure boot error", Regular "Bootloader/Download mode" is non-existant or I can't access it in any given way, tried "vol+" while off + "Power Button", tried to reboot to it from Rashr, nope, it just continues to boot android, the other "Download mode ("Vol+" + "Connect USB cable to PC")" (don't know if it's the same as Bootloader) gives "certificate/secure boot error". I even flashed the latest official TWRP for vs985 and 2.8.6 that I knew definately worked before, didn't work.
I was able to boot into fastboot following "this" thread but it doesn't perform commands.
When booting to Android I kept receiving notification that I had a pending update, I managed to wipe /data and /dalvik from adb shell, that resolved that issue.
Attempted to reflash stock KitKat again, but I can't, since phone doesn't have bootloader or recovery no more.
At least I still have working rooted 5.0.1 Lollipop, but have the other issues. I want to attempt to re-flash aboot.img, laf.img and sbl1.img to fix those issues but since its my main phone don't want to hard brick it right now.
Any input is welcome and appreciated, will keep reading a lot, think I might open a different thread for this.
Cheers.

[HELP REQUEST] WILL PAY TO WHOEVER HELPS ME GET THROUGH THIS SOFTBRICK

.

rodagola said:
Hello everyone on xda, please bare with me. Here's my story
I own a Redmi Note 8 pro, chinese rom model. It was running miui 11.0.3 over android 9 If I recall correctly.
Ok so... I was tired of some of the china apps pushing their notifications over and over and auto installing stuff, so I looked up how to apply adb commands to remove such bloatware, which was a fairly simple process. I copied and pasted a list of safe stuff to delete I found around some forums.
then... there were some other packages I checked out using an app called "app inspector", which directly tells you which app is under which package (totally useful for this purpose).
I tried to be careful not go overboard since I don't have any root access, or custom recovery, and wasn't really planning to have these, just wanted to keep this as my simple daily driver cellphone, but also perform this little maneuver to get rid of some bloatware.
little did I know, I was about to somehow softbrick it. More info: I did not use a screen lock method other than the "swipe up".
Ok, so I uninstalled some packages I cannot remember exactly how they went, but they had the terms "xman" and "yman" on them I think, I wasn't so sure about them because I looked them up on the web yet they didn't appear anywhere. I think they went something among the lines of "com.android.miui.xman". I also uninstalled 2 or 3 more, but after googling, they seemed unsuspecting.
Anyways, I'm aware there's a command to reinstall the packages because they're still on the phone's ROM image. That is in case I had to restore anything back to normal. Turns out I later rebooted the phone and when it launches the lock screen, I keep swiping up but it won't take me over to the actual MIUI launcher. The screen is frozen on the lock screen.
I'm not freaking out at this time because I still tried to connect the device to the pc, and it still shows as connected, I then go to the adb console and type "adb devices", it is still recognized, however, it says next to it that it is unauthorized... damn it. So now I might not be able to run the commands that allow me to reinstall the exact packages that are rendering the phone softbricked (I guess), plus I'm not really sure which package caused this.
After about a minute or two on the lock screen, the phone takes me to the "redmi-recovery 3.0",
which displays 3 options:
Reboot to system: which basically forms a loop
Wipe date: godforbid... really don't want to do it since I likely had many files not backedup
Contact miassistant: not sure what to do with this, says "pcsuite.mi.com" at the bottom
on the miassistant option you can apparently sideload stuff, idk how to go about this, maybe it allows me to install a slightly upgraded ROM, which in turn will work the same as if it was an OTA update (so it will keep my data as it was instead of wipe)? Because the point is not to erase my user data!!
I'm not sure how to feel or what to do without losing my pictures, notes and documents
I have hopes this situation can be turned around back to normal, and like the title implies... I'm WILLING to PAY you through paypal or something to WHOEVER offers to guide me through in the best way possible. Please if you have the knowledge/experience don't hesitate I'll also be grateful timelessly.
I'm not an expert at these scenarios so I might as well ask on xda where most are really skilled! Thanks in advance to those amazing souls
Click to expand...
Click to collapse
tldr;
If you can boot into fastboot mode you can just flash a official MIUI fastboot ROM:
Xiaomi Firmware Updater (where you can download official MIUI ROMS): https://xiaomifirmwareupdater.com/
This is the current hard unbrick method: https://telegra.ph/Installing-Redmi-Note-8-Pro-firmware-via-SP-Flash-Tool-01-21
It should also work in your case and there's even a video guide.
This is another video guide for fixing a hard brick:
Both methods above will format your phone though (afaik all data will be lost).
Compass.

.

rodagola said:
are these the kind of roms that you unzip and have the BL, AP, CP, CSC files? I could try that, but I've heard installing home_csc will not override/wipe my personal data. If this is what you meant, can you confirm? Or do you reckon these linked video tutorials would not wipe the data?
Click to expand...
Click to collapse
Nope, it doesn't.
If you can boot into Fastboot, flash the ROM using Mi Flash, otherwise, use this tutorial:

.

Compass Linux and juliusjr have told you the method, so I will just add supplemential infos.
In your case, I think simple upgrade will do the trick, dirty flash is applicable both via fastboot flash (mi flash) and recovery flash (the mi assistant method). If you want to stop the ads, I will recommend you to unlock your bootloader, move to global, root, and use an adblocker (a bare minimum config, in trade of some bangking apps being blocked).
I don't know the corresponding version for miui china rom, but in global rom, prior 12.0.0.7 (the one with the early 2021 security update), you can dirty flash back and forth while keeping your data.

.

rodagola said:
Hi, thanks for your info, I would like to try the mi flash tool as I've been told before the stock recovery thing has less chances of working. However, I had dev options turned on before but didn't manage to turn on the "OEM unlock" option, will flashing original ROMs work this way? or did I need that option toogled on? That's my last doubt, and thanks a lot. Btw, the China ROM this Redmi N8P had never ever showed me any ads, but thanks a lot as well for such input
Click to expand...
Click to collapse
You still have a locked bootloader? (How do I know? You will see "Unloked" on the bottom of the screen everytime your device reboots and showing mi logo if your device is unlocked)
Hmm, mechanically it work like normal ota update. Full recovery update will ony erase nessesary partitions (system, boot, and some other things) while keeping your data intact. So doing this to your phone technically safe. You can do this with MiFlashPro, do a recovery update using a recovery rom (the 2 gigs one) greater than your current MIUI version. But please bear in mind that I have never done this before to a locked phone. A same distribution version IS A MUST (i.e. global with global).
Oh and it will need you to log in to your xiaomi account. My guess is you need the flash permission open for your account (if you have unlocked your phone you shouldn't have a problem). I have never flashed with an account that never have been used to unlock a bootloader, so I might be wrong.
If your phone is bootloader unlocked, Mi Flash is the least demanding and it can retain your data with "save user data" in the bottom right corner option on, regardless your miui version (but I think there will be some problem with installed apps if you downgrade from A10 to A9).
Hope this help.

Clarifications on Bootloader unlocking

Hello, I own a sm-p605 LTE/WiFi and I had been trying to unlock the bootloader since some time unsuccessfully. I then succeeded eventually and accidentally. After having flashed twrp through Odin many times successfully and using different twrp versions, in the end twrp never showed up. I did a reset to factory defaults within the stock ROM (to address a different issue actually) and that (and only that!) made the twrp show at boot. Else it went straight into stock bootloader. I add that through twrp I was able to install LOS 14.1 2021 + pico open-gapps successfully.
Now, I have two questions:
1. it might sound silly but, can I now assume that my bootloader is unlocked? I'm asking this because my device did not have the OEM Unlock option in the stock rom developer settings, and I have tried all possible advices read on this forum to no avail, to make it appear. I assume that twrp took control over the boot process as it is working fine, but the fact that the OEM Unlock option was never available makes me doubt.
2. I thought that LOS would automatically allow root access, but it does not seem the case. A su checker tells me not. But an app that I have installed (a pdf reader) warns me if I'm ok to install the app in a rooted environment. I guess su checker is the one to trust, right?

That sounds interesting, can you provide me the files you used and the version of Odin. I would like to test this on my p605 to try it out. Sits in a drawer anyway.

mezam said:
Hello, I own a sm-p605 LTE/WiFi and I had been trying to unlock the bootloader since some time unsuccessfully. I then succeeded eventually and accidentally. After having flashed twrp through Odin many times successfully and using different twrp versions, in the end twrp never showed up. I did a reset to factory defaults within the stock ROM (to address a different issue actually) and that (and only that!) made the twrp show at boot. Else it went straight into stock bootloader. I add that through twrp I was able to install LOS 14.1 2021 + pico open-gapps successfully.
Now, I have two questions:
1. it might sound silly but, can I now assume that my bootloader is unlocked? I'm asking this because my device did not have the OEM Unlock option in the stock rom developer settings, and I have tried all possible advices read on this forum to no avail, to make it appear. I assume that twrp took control over the boot process as it is working fine, but the fact that the OEM Unlock option was never available makes me doubt.
2. I thought that LOS would automatically allow root access, but it does not seem the case. A su checker tells me not. But an app that I have installed (a pdf reader) warns me if I'm ok to install the app in a rooted environment. I guess su checker is the one to trust, right?
Click to expand...
Click to collapse
You're TWRP installing problem might have come up when not rebooted DIRECTLY after flashing into recovery.
This failure lets stock recovery get reanimated.
I have P605 too and can asure you that this devices never had an OEM locked bootloader. I've read that Verizon and others in the US locked them, but never did Samsung.
Mine is on LOS 17.1 which is very stable and to gain root you gotta flash Magisk and after rebooting to system set it up.
A simple pdf reader shouldn't imho care about it's envirement. So I wouldn't use it and search for a different one.
I use ebookdroid.

bmwdroid said:
You're TWRP installing problem might have come up when not rebooted DIRECTLY after flashing into recovery.
This failure lets stock recovery get reanimated.
I have P605 too and can asure you that this devices never had an OEM locked bootloader. I've read that Verizon and others in the US locked them, but never did Samsung.
Mine is on LOS 17.1 which is very stable and to gain root you gotta flash Magisk and after rebooting to system set it up.
A simple pdf reader shouldn't imho care about it's envirement. So I wouldn't use it and search for a different one.
I use ebookdroid.
Click to expand...
Click to collapse
I wish I could do the same, sadly I am a Verizon version owner and let me tell you it is terrible in 2022. If I could unlock it I would definitely use it more