A little back ground, I have a G Pro F240L, and was running the G2 apps V5, and felt the urge to try out kit kat. My journey back to stock though was alittle more complex than the process detailed on this thread. Basically, for whatever reason the KDZ method did not work for me, so after a long search I came across flashing with LG Flashtools (thanks chimmot307!).
My process for going back to stock 4.1.2 was as followed:
1) I had already installed the LG United Drivers from my attempts at using KDZ for flashing. I download the stock 4.1.2 f240L TOT file from here. (Tip: You can save some time by registering for fshare, but its not required. Your download will just be restricted to 100 kb/s, as opposed to 200 kb/s when you sign up for the free account. Actually I didn't want to register for an account, but my first attempt at downloading the file ended in failure, and fshare will not let you download more than once, so I registered for an account and boom it let me download it again, at a faster rate to boot. Anyways...)
2) Download the dll provided by chimmot307 here. This is the dll used for flashing our F240x. There's a different dll that you will need to use LG Flash Tool.
3) Download LG Flash Tool v1.8.1 here or here (thanks WACOMalt!).
4) Download the dll to get flash tool to run here.
5) Install flash tools, after complete, copy the dll from step four into whatever directory flash tool installed to.
6) Follow the guide provided by WACOMalt, which is actually for G2, but the process is the same for f240. Process is also detailed here (with pictures). The second link uses an older version, but the process is the same.
Some areas of concern for me as I followed the guides:
- When flash tool says ready, just disconnect the usb and wait afew seconds. Disregard the download mode warning. Don't touch the power button just take the usb out and leave it in download mode for a few seconds. Plug the usb back into the phone and the flashing will start automatically. Go out for a smoke, walk the dog, or watch the progress bar. I did all three.
- When the progress bar says something like "pass (543 seconds)", the flashing is complete and you can disconnect the usb from the phone. CLOSE LG FLASHTOOLS AFTER YOU DISCONNECT THE USB! I made the mistake of leaving it on, and had to go through the whole process again, as well as a panic attack hoping I didn't just brick my phone when I plugged the usb back in to run support tool :laugh:.
- On the phone, choose your language and skip though all the setup stuff because you will have to do that again anyways because you need to do a factory data reset, under backup & reset in the settings menu.
From there I was on a rather early version of the firmware. I think it was v10k. From there to update to 4.4.2, since KDZ and OTA wasn't working for me, I ran LG Support Tool, and that let me update to KitKat. Whew...
Anyways, I am currently on 4.4.2 stock, and was thinking about trying out the Sphinx V1.5. Just a few questions
1) In this post the poster said download the latest sphinx rom and corresponding patched for your device. What is the corresponding patch? All I have is the file SphinX_GPRO_Kitkat_1.5.zip. I don't see a patch. Is the patch included in that file?
2) How is the sphinx rom different from the g2 apps rom? I'm trying to decide if I should wait for g2 apps rom v7 to be final since I trust that dev. Is there a big difference? Is there anything you miss from the g2 apps rom that sphinx rom doesn't have?
3) Does LTE work?
Anyways thanks for listening, hope this post can help someone with an F240 on a custom rom wanting to go back to stock in order to try out kit kat.
Before I say anything, I take full responsibility for my stupidity that resulted in a mistake that didn't have to happen.
Back in my SGS3 days I was pretty comfortable with flashing files and using adb. Besides using PurpleDrake to flash my LG G3, it's been a long while since I have tampered with a phone.
I was in the process of installing CloudyG3 when I remembered I forgot to perform a full backup but I didn't think too much of it, I thought everything would go smoothly but I was terribly wrong. It was as I started to flash CloudyG3's file that I realised it wouldn't work because I didn't download the file directly from my device onto my device. So here I am with an LG G3 that I've had for just over a month that cannot be used right now.
I have a stock firmware image on my computer so I'm hoping that I can push it to my device. The thing is I haven't used adb in so long to the point that I'm struggling to install Android SDK (asks me to locate something to do with java that I have installed, but I can't find it).
I'd greatly appreciate it if someone can guide me through the steps to get adb working and my phone back in working order.
Thanks in advance!
I have successfully managed to get the SDK tools working and I have been able to push CloudyG3 to my phone, it's currently uploaded but I doubt it'll work. I have a stock image that it in the KDZ format, is it safe to flash?
Edit: I done it! I don't know how, but I done it, no help is needed
I'm going to be away soon and won't have easy access to a non-professional PC (meaning any computer I may have access to - I won't have admin rights with). I didn't want to wait for a root+TWRP dev package for Lollipop to be released. I wanted to just get it done, (I was having bad problems with KitKat on some select apps because of LG's 4.4 coding, long story, but I won't even go there...)
I saw that I can go to the LG support site via a link from Android Central and manually upgrade to Lollipop way before the OTA rollout even begins. I had heard rumors of people having problems, read posts, and learned how to avoid it all. I reset everything before upgrading. I did many factory resets after getting Lollipop, (I know, a lot). I got rooted and set mostly everything up.
I wanted to get Xposed loaded, BADLY. I looked it up for Lollipop and realized that I'd have to flash a custom recovery. I expected as much. When I looked that up, I realized that I would have to either use a downgrade-upgrade method (which I didn't feel like going through) or a mandatory requirement of factory reset though a process. I had already set up all of the system stuff and restored from Titanium backup most of my apps. There was no way I would factory reset because I hate resetting-up the system stuff. - - - - - BIG MISTAKE 1
So I found a thread for the D850 (AT&T) version (no I didn't flash a bad radio or anything, I thought I knew what I was doing because I was only flashing recovery stuff for Lollipop, not an AT&T rom or radio.) This was to install TWRP without downgrading or resetting. The instructions said to copy files from an aboot.img and other boot images and such (to replace the recovery) on to the internal memory and use a terminal to type in code. I did it and rebooted it.
I made a horrible mistake.
When I held the power button on the phone, nothing happened. I found out that when plugging it in to the PC, it seems to be in download mode. It was fully charged. When using the restore/brick recovery software, I have tried different cables, different computers, checking to see if anything is corrupt, different USB ports, etc. with the files... Nothing will work. I keep getting an error with a red box about the model or something. "Model Information Check Fail"
So basically I have broken boot images on my device. I need to fix these.
Where do I go from here? All because I wanted Xposed on Lollipop without resetting.
Click to expand...
Click to collapse
I have this situation. I messed up with laf.img and aboot.img too (from D850, thinking it was harmless since trying to install custom recovery only) and device won't turn on but PC recognizes as download mode but can't flash. Please read above. I'm bricked and all restore methods have failed so far.
Source from u/nicksteron on reddit.
I'm having this issue now too. It seems the thing I downloaded and tried broke my boot images.
Have you been able to fix this?
I'm trying the LG Flash Tool but it stops me at the model check fail as well. Gonna try a kdz method next.
EDIT: I tried the KDZ method with LG Flash Tool 2014 using both a KitKat and Lollipop based ROMs and I get an error. The S/W Upgrade progress gets to 4% and then the error shows up. I need my phone. Help?!
In trying to update a rooted D858HK v20D to v20E, I searched around and found, okay, I need TWRP Recovery installed first.
So I used ImageprepGUI 2.6 and tried to grab the appropriate TWRP from its menu. Then tried to pull it from the Google Drive link in another thread.
Both tries resulted in "successfully" updating Recovery to TWRP, but with a warning that aboot.img wasn't in /data/local/tmp and that the phone would brick, and yet it claimed to be rebooting into recovery... which didn't happen.
So I tried to get into recovery using Titanium Backup's shortcut, but that only results in the dead Android with Red Triangle logo.
What now? I don't want to do the vol-down/power, release, re-press, wipe, wipe method in case, you know, it actually does reset the phone.
I actually manually put aboot.img into /data/local/tmp with 777, but no dice.
There is one other thread that talks about the red triangle and how it's because the recovery isn't the updated version or something, which I don't quite get, though it stands to reason that whatever Imageprep is providing for TWRP should be reasonably compatible with v20D? or is that even an issue?
(a little background on the phone. Purchased with Kitkat, OTA without root to Lollipop. Rooted with oneclick written by avicohh. Never put another recovery on here before.)
**UPDATE**
Successfully updated to V20E manually with LG Flash Tool 2014 But still need to figure out why TWRP won't work right
Thanks very much in advance.
I think the only method available for installing TWRP on the HK LP version is...
(D858HK)LG G3 AutoRec-Lollipop
https://play.google.com/store/apps/details?id=b007.autorecd858hk&hl=en
redduc900 said:
I think the only method available for installing TWRP on the HK LP version is...
(D858HK)LG G3 AutoRec-Lollipop
https://play.google.com/store/apps/details?id=b007.autorecd858hk&hl=en
Click to expand...
Click to collapse
OMG that was easy. Evidently, I hadn't searched enough. And the title of the app, ARec sounds more like Auto-Record or something, which seemed suspicious, but yeah, that did the deed SO AMAZINGLY EASILY.
Thanks for taking the time to point out the direct link to the app!!!! (I know some others would say "do a google search for something like" or "this has been asked before". ThankyouThankyou
:good:
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.