Develop Bugs

[Brick phone] help needed

I have flashed many phones before my G4 and this is the first time I'm having to ask for help.
The firmware installed was AICP CM13, then the screen went green with a DemiGod message. I held the vol down button to reboot and it came back up. After a few restarts and green screens i figured I needed to reflash the firmware. I booted into Recovery and while wiping the device to flash a new firmware, TWRP crashed. After leaving it for half hour or so, I took the battery out to enter into TWRP so I can flash the new firmware. TWRP is no there to be seen. I hold down the vol down and power button, releasing power for second or two and choose to go into recovery. Every time the phone just gets stuck on the LG screen displaying "Bootloader state :Bootlader unlocked!".
In short, I have no firmware, the device has been wiped and TWRP doesn't seem to be working.
I have tried to flash a KDZ file (H81520A_00.kdz) using the flash guide here. This comes back as unsuccessful saying "connection to server failed". As shown below.
View attachment 3605673
The method to flash an .img file using cmd on the pc includes moving the 4gb .img file to the parent folder of the phone storage. I can't get to move any files whatsoever to my device so figured this method would not work.
Seems if I can somehow flash TWRP, then I should be able to install a new firmware.
Any help much appreciated.

Hi, Can you get an ADB connection to your phone, or get your phone into bootloader somehow. From there you could try 'fastboot boot recovery.img'?
If so, then from within TWRP you can flash twrp recovery so the recovery is then sorted. Then you could flash click here (the full version). This will then allow LG UP to find a connection. From there if you really wanted to can flash any KDZ as a proper reset. Hope it works buddy!!

rav101 said:
Hi, Can you get an ADB connection to your phone, or get your phone into bootloader somehow. From there you could try 'fastboot boot recovery.img'?
If so, then from within TWRP you can flash twrp recovery so the recovery is then sorted. Then you could flash click here (the full version). This will then allow LG UP to find a connection. From there if you really wanted to can flash any KDZ as a proper reset. Hope it works buddy!!
Click to expand...
Click to collapse
I can get into recovery but I am unsure as to how I could try 'fastboot boot recovery.img'. Would that be the same as flashing an img when the root method first came out?

AndHD2 said:
I can get into recovery but I am unsure as to how I could try 'fastboot boot recovery.img'. Would that be the same as flashing an img when the root method first came out?
Click to expand...
Click to collapse
Just to make sure you know. TWRP is your recovery. Your last message said you did not have TWRP?
When I first rooted my phone (and subsequently when I install a .kdz), I have to go into the bootloader and install TWRP. I personally do this by using the above command "fastboot boot recovery.img" with the recovery.img being placed on my computer in the same location as my adb installation. This command only boots up TWRP but does not flash it. I then flash twrp by having a copy of it on my external sd card. Within twrp you can select to flash zip, or there is an option to flash an image. I use this to flash twrp (from twrp... its a little inception like but it works). Once you have twrp up and running, you can install a rom. If you want to do flash a .kdz, I have found you need to be on a stock based rom in the first place hence why i referenced the v20a full system zip.
Hope that made sense.
Regards,
Ravi

It is late here and with me being tired I said recovery instead of download. I can boot into download mode but when I try to boot into recovery then it just goes straight to the LG splash screen and it will either remain in that screen or the green Demigod screen would come up.
I'm off to sleep and away from my laptop as I have to be up in 5 hours. Luckily I still have my Note 4 so at least I'm not without a phone in the morning. I will try the steps what you have suggested just as soon as I get back from work.
Many thanks

rav101 said:
Just to make sure you know. TWRP is your recovery. Your last message said you did not have TWRP?
When I first rooted my phone (and subsequently when I install a .kdz), I have to go into the bootloader and install TWRP. I personally do this by using the above command "fastboot boot recovery.img" with the recovery.img being placed on my computer in the same location as my adb installation. This command only boots up TWRP but does not flash it. I then flash twrp by having a copy of it on my external sd card. Within twrp you can select to flash zip, or there is an option to flash an image. I use this to flash twrp (from twrp... its a little inception like but it works). Once you have twrp up and running, you can install a rom. If you want to do flash a .kdz, I have found you need to be on a stock based rom in the first place hence why i referenced the v20a full system zip.
Hope that made sense.
Regards,
Ravi
Click to expand...
Click to collapse
I have finally got chance to sit down and have a go at performing the procedure listed above. I downloaded the adb and fastboot installation as outline here. It is the minimum to what this thread says I will need for my device. I moved the recovery.img to the installation location which were in Windows/programs files (x86)/Minimal adb and fastboot. I launched the program and typed in 'fastboot boot recovery.img'. I tried this in download mode, charging mode (phone off) and while on the LG flash screen where TWRP didnt load but in all cases I have had no response at all.
If someone can help the much appreciated.

AndHD2 said:
I have finally got chance to sit down and have a go at performing the procedure listed above. I downloaded the adb and fastboot installation as outline here. It is the minimum to what this thread says I will need for my device. I moved the recovery.img to the installation location which were in Windows/programs files (x86)/Minimal adb and fastboot. I launched the program and typed in 'fastboot boot recovery.img'. I tried this in download mode, charging mode (phone off) and while on the LG flash screen where TWRP didnt load but in all cases I have had no response at all.
If someone can help the much appreciated.
Click to expand...
Click to collapse
Hi @AndHD2, I'm sorry but I can't think of anything else

rav101 said:
Hi @AndHD2, I'm sorry but I can't think of anything else
Click to expand...
Click to collapse
I had another demigod type screen but this was grey and not green with less detail. However it did say it were a kernel error.
Is the handset still under warrenty with the bootloader unlocked. I have a feeling its not

OP3 with TWRP 3.0.2 reverts back to stock recovery on reboot

Has anyone seen the OP3 automatically revert back to stock recovery no matter how many times TWRP is successfully installed via fastboot?
At first I thought it was the "Advanced reboot" enabled causing it since when "recovery" is selected from within the OS power button menu, a "factory data reset" message appears prior to reboot....BUT I tried cycling the phone with "Advanced reboot" disabled and a clean install of TWRP working - and it still didn't stick. Regardless, whenever I enter the OS and then either turn the phone OFF or manually reboot it, the stock recovery gets automatically rewritten.
Could that annoying "device unlocked" pre-boot warning message be the cause? Do I need to relock the bootloader and/or disable "OEM unlocking"?
To confirm, I currently have the OP3 bootloader unlocked and NOT rooted (need Android Pay). The same issue occurs with the OP3 running OOS 3.1.2, 3.1.3, and 3.2.0.
I never had this issue with my OnePlus 1 so I am a little bewildered why this keeps happening.
Scott-

Which developers TWRP are you using? I had that happen, I forget which one I was on. Grarak 's TWRP works great and doesn't revert back to stock recovery.

marcjames513 said:
Which developers TWRP are you using? I had that happen, I forget which one I was on. Grarak 's TWRP works great and doesn't revert back to stock recovery.
Click to expand...
Click to collapse
Yes, TWRP by Grarak. I have not tried the "official" TWRP yet.
To confirm, all you do is:
1. Enable USB debugging, OEM unlock, and Advanced reboot...
2. Reboot in to the bootloader and decrypt user data via "fastboot format user data" (not required{??})
3. Allow the phone to wipe and re-establish itself...
4. Set the phone up again....enabling USB debugging, OEM unlock, and Advanced reboot...
5 Reboot in to the bootloader and unlock the bootloader via fastboot oem unlock...
6. Allow the phone to wipe and re-establish itself...
7. Set the phone up again....enabling USB debugging, OEM unlock, and Advanced reboot....
8. Go back in to the bootloader and Install TWRP via "fastboot flash recovery <TWRP.img>...
That is it, yes?
It seems relocking the bootloader doesn't do anything for me. Also, even though I decrypted the user data partition, it still shows the "encrypt phone" being "encrypted" within the Security & fingerprint menu. Maybe something related is blocking the recovery image from sticking past a reboot.
Thanks,
Scott-

I also had this problem with one of the other unofficial TWRPs. Grarak's TWRP worked in the end.

You need to allow TWRP to modify the system partition. If you said to leave it read-only on first boot, it will revert to stock recovery.
The problem is if you flash TWRP now, it wont give you that option again. To find it, reflash, boot into TWRP, go to Mount and change it towards the bottom where it says Mount system partition read-only.

karthikrr said:
You need to allow TWRP to modify the system partition. If you said to leave it read-only on first boot, it will revert to stock recovery.
The problem is if you flash TWRP now, it wont give you that option again. To find it, reflash, boot into TWRP, go to Mount and change it towards the bottom where it says Mount system partition read-only.
Click to expand...
Click to collapse
Still doesn't help. Keeps reverting to stock. I'm on OB35 TWRP 3.2.1. Need to flash a rom. I dont need root. Any ideas guys?

Rony John said:
Still doesn't help. Keeps reverting to stock. I'm on OB35 TWRP 3.2.1. Need to flash a rom. I dont need root. Any ideas guys?
Click to expand...
Click to collapse
Needing root and having root are two different things. Flashing Magisk immediately after flashing TWRP will solve the issue. If you don't want root at all, I don't know of any other method to solve this.

tnsmani said:
Needing root and having root are two different things. Flashing Magisk immediately after flashing TWRP will solve the issue. If you don't want root at all, I don't know of any other method to solve this.
Click to expand...
Click to collapse
Already flashed the rom and the problem is solved. Now im in search for a good rom for battery and relatively good camera. Any suggestions. RR seems to be draining so quickly. I ll just wait till 3-4 charge cycle.

My OP3 is Dead! Any help is appreciated!

Long story short, I made my phone bricked with a small mistake:
I had Freedom OS (latest build) and then tried to flash Miui rom. To do so, I needed to flash back to official Hygrogen/Oxygen OS (MM). The mistake I made was to lock bootloader first. Then, phone got into bootloop....I searched and found Qualcomm software can revive any Qualcomm phone. I downloaded Qualcomm app and driver for Oneplus 3 and tried reviving my phone....What happened finally was that the phone was restarted and a screen showing Cache failed, System failed, userdata failed appeared. I tried to find Cache, system img ...of OOS 4.02 to flash separately....while I couldn't find them anywhere...I just tried fastboot flashing a recovery (both official and TWRP) but got error that partition doesn't allow writing (I guess because phone is locked now)....anyway, phone can boot only in fastboot and I wonder what else I can do....
Any help is very much appreciated!

alireza.nasibi said:
Long story short, I made my phone bricked with a small mistake:
I had Freedom OS (latest build) and then tried to flash Miui rom. To do so, I needed to flash back to official Hygrogen/Oxygen OS (MM). The mistake I made was to lock bootloader first. Then, phone got into bootloop....I searched and found Qualcomm software can revive any Qualcomm phone. I downloaded Qualcomm app and driver for Oneplus 3 and tried reviving my phone....What happened finally was that the phone was restarted and a screen showing Cache failed, System failed, userdata failed appeared. I tried to find Cache, system img ...of OOS 4.02 to flash separately....while I couldn't find them anywhere...I just tried fastboot flashing a recovery (both official and TWRP) but got error that partition doesn't allow writing (I guess because phone is locked now)....anyway, phone can boot only in fastboot and I wonder what else I can do....
Any help is very much appreciated!
Click to expand...
Click to collapse
Try this method now it will work
https://forum.xda-developers.com/showpost.php?p=68245482&postcount=111

The point is I can't flash anything on any partition as phone is locked and can't be unlocked!

alireza.nasibi said:
The point is I can't flash anything on any partition as phone is locked and can't be unlocked!
Click to expand...
Click to collapse
If you can access fastboot mode then you can definitely flash by other method

abhi0502 said:
If you can access fastboot mode then you can definitely flash by other method
Click to expand...
Click to collapse
you mean the 2nd method?

You said you lock the bootloader in 5th line, in order to flash any recovery you need to unlock bootloader again.
I also tried to lock bootloader last week and then my op3 got bricked with bootloop.
-First get into fastboot and unlock bootloader this will wipe your all data including you saved ROM files.
- after this flash TWRP or OnePlus recovery and sideload OOS ROM. Or transfer the ROM file using mtp in TWRP recovery.
- then you can easily do anything you want. Don't relock bootloader.

Those red things on your screen basically means your phone misses partitions, without these partitions it doesn't boot duhh.
If method 2 of the unbrick tool doesn't work, you can manually flash those files in Fastboot, the program has a folder that has all partitions like, cache.img, boot.img etc. I've been here as well nothing to worry about just keep us updated so we can help you

There's no mention in your post on which unbrick method you used. Was it first or second? By the looks of the end result, it was the first.
Just follow the same steps, but use method 2, that should leave you with a phone like out of the factory. Afterwards, you can simply set it up and let it update through OTA if you want to remain stock, or simply unlock bootloader, flash TWRP and flash whatever you want.

use the second method. the file you have to download contains all the raw room and when you follow the process, it would work. happened to me two times and i used this method

Just simply use fastboot oem unlock in fastboot mode then flash a recovery via fastboot flash recovery then go to recovery and once wipe all the partions and install a rom and then tried booting

Thank you all for your time and support. Method 2 saved my phone!

Pixel 2 xl stuck on white screen with G on it and status bar underneath

Phone is stuck on this white screen with the G on it and the status bar scrolling over and over. Phone is unlocked and rooted and i was having trouble installing a recovery onto it. I just spent 3 hours setting everything up. Do i have to wipe and start again?

equlizer said:
Phone is stuck on this white screen with the G on it and the status bar scrolling over and over. Phone is unlocked and rooted and i was having trouble installing a recovery onto it. I just spent 3 hours setting everything up. Do i have to wipe and start again?
Click to expand...
Click to collapse
What did you flash to cause this?? Did you try a hard restart by holding the power button down until it starts rebooting?

Tried a hard restart and same thing happens. I was trying to install TWRP using skipsoft toolkit #6 option.

equlizer said:
Tried a hard restart and same thing happens. I was trying to install TWRP using skipsoft toolkit #6 option.
Click to expand...
Click to collapse
Since I'm not familiar with toolkits, or their interface, I'll let someone else take over. Have you considered using adb and fastboot commands to accomplish your task?

I would if i knew what i was doing I just tried the wipe everything option and now it says "cant load android system. Your data may be corrupt. If you continue to get this message, you may need to perform a factory reset and erase all user data stored on this device"
Well i did that and i get that same message over and over again. How do i start fresh? I have the image on my computer

equlizer said:
I would if i knew what i was doing I just tried the wipe everything option and now it says "cant load android system. Your data may be corrupt. If you continue to get this message, you may need to perform a factory reset and erase all user data stored on this device"
Well i did that and i get that same message over and over again. How do i start fresh? I have the image on my computer
Click to expand...
Click to collapse
If you want to continue using the toolkit, I would post your problems in that thread. The folks that made it will be more qualified to help you than I could.

i went into bootloader mode and did the flash all. The phone reboots and comes back with the same message "cant load android"
I dont care what i use to get things working again. pls help.

equlizer said:
i went into bootloader mode and did the flash all. The phone reboots and comes back with the same message "cant load android"
I dont care what i use to get things working again. pls help.
Click to expand...
Click to collapse
I will try my best.
1. You have definitely unlocked_critical correct. If you haven't, you need to.
2. Have you downloaded SDK on your pc? You need this as well. You can find a link to it on Google's factory image page.
3. You have downloaded the latest factory image and unzipped it with the 7zip program.
4. Inside the SDK program, look for a file called platform tools.
5. You need to take the contents you extracted from the factory image, and place them in the platform tools folder. That includes: Radio, bootloader, the flash-all.bat file, and another large zip file that contains the boot, system, vendor and about 16 other things.
6. Put your phone into bootloader mode and plug it into the pc. Open a command prompt from the platform tools folder and type "fastboot devices" if your phone ID comes up, your good.
7. Double click the flash-all.bat file, and that should start the installation process. It will take a little while to install the OS, so be patient. If all goes well, your phone should automatically boot up.
8. I will try and find a link for all this installation stuff.
9. Good luck!
---------- Post added at 01:23 PM ---------- Previous post was at 01:16 PM ----------
https://forum.xda-developers.com/pixel-2-xl/how-to/guide-unlock-flash-root-pixel-2-xl-t3702418
Here is a link to instructions written by one of the best kernel developers out there. Read it carefully if what I gave you doesn't make sense.

Tried it this morning and when i go to root with magisk (followed every step) i get the white screen with the G and the bar scrolling

equlizer said:
Tried it this morning and when i go to root with magisk (followed every step) i get the white screen with the G and the bar scrolling
Click to expand...
Click to collapse
Did you ever get your phone to boot up on stock system?

Badger50 said:
Did you ever get your phone to boot up on stock system?
Click to expand...
Click to collapse
Not sure how i did it but it seems to have reverted back to complete stock. Everything setup after but when it rebooted it said "this device cannot be trusted, hit the power button to continue" so i do and it seems to boot back into the phone. How do i get rid of that message?
Ive never had so many issues with a phone before.

How do i get rid of that message?
once you had the Bootloader unlocked in this phone it will display that message in every boot, there is no way to get rid of it at this moment.

equlizer said:
Not sure how i did it but it seems to have reverted back to complete stock. Everything setup after but when it rebooted it said "this device cannot be trusted, hit the power button to continue" so i do and it seems to boot back into the phone. How do i get rid of that message?
Ive never had so many issues with a phone before.
Click to expand...
Click to collapse
A lot of trouble people have with these phones has to do with the A/B partitions, glitches in cables, sdk, PC's, ghosts in the machine, and users not taking the time to read and learn what to do. Anyway, glad you got it going. Your welcome.

Everything else worked except for the rooting with magisk. when it patches the image using manager 5.4.3 it says its downloading version 14.0 not 14.5. I go to flash the patched boot img then it just reboots to the white screen with the G and it hangs there till i shut it off.

equlizer said:
Everything else worked except for the rooting with magisk. when it patches the image using manager 5.4.3 it says its downloading version 14.0 not 14.5. I go to flash the patched boot img then it just reboots to the white screen with the G and it hangs there till i shut it off.
Click to expand...
Click to collapse
Manually download 14.5 and flash it in twrp. Or, take the stock boot.img, place it on your phones internal storage, open magisk, hit install, and select patch boot (I think) Then take the patched_boot.img and flash that with fastboot. Either way should give you root.

I already said I patched it using the magisk I installed but when I flash it I get the G on the white screen. I can't even get twrp to stick. This was all using 8.1 but now I'm on 8.0. I guess I'll try again?

equlizer said:
I already said I patched it using the magisk I installed but when I flash it I get the G on the white screen. I can't even get twrp to stick. This was all using 8.1 but now I'm on 8.0. I guess I'll try again?
Click to expand...
Click to collapse
What twrp version are you using? So, you can fastboot the twrp-3.1.1-beta2-taimen-img but then are unable to flash the twrp.zip once you enter temporary twrp?

I just downloaded twrp 3.1.1 beta 2 taimen.img and the zip
how do i fastboot the img?
then from there do i flash magisk 14.5.zip then reboot and install magisk manager 5.4.3 then check for root?

equlizer said:
I just downloaded twrp 3.1.1 beta 2 taimen.img and the zip
how do i fastboot the img?
then from there do i flash magisk 14.5.zip then reboot and install magisk manager 5.4.3 then check for root?
Click to expand...
Click to collapse
Go to fastboot and type: fastboot boot twrp-3.1.1-beta2-taimen.img
That should immediately take you temporary twrp where you then flash the twrp.zip, and then flash your magisk zip. That should also install the magisk app as well.

it takes me to the screen where it says "this devices cannot be trusted" so i hit the power button then it just reboots into android 8.0. I appreciate all the help

G7 doesn't boot after flashing modified boot.img

So, i bought a G7 a few days ago and now i wanted to flash aosp pie. I succesfully unlocked the bootloader and then proceded to flash twrp from this tutorial: https://www.cyanogenmods.org/forums/topic/twrp-download-for-lg-g7-and-rooting-guide/ . After i flashed the twrp image through fastboot, i wanted to go into the recovery, but i didn't see how (only later i realized there is an option in bootloader to power off). So i restarted and started to bootloop. In the end i figured out how to get into recovery, by hard resetting the device. But in twrp i couldn't mount any partition or flash anything. Researching more, i found out that i had to be rooted first, which wasn't specified in the tutorial. I went back into bootloader and flashed the boot.img from here: https://forum.xda-developers.com/lg-g7-thinq/development/mod-v16-t3808363 . After rebooting, the phone didn't even show the lg boot animation, and stays on the lg g7 logo. I can't get into the recovery with the hard reset method and i don't know how to power it off. What should i do?
Update: the phone just went off, i think it ran out of battery since it has been in this state for the whole night. I went into bootloader. What to do?

Charge the phone and See if phone goes into download mode then try to flash stock with lg up.. https://forum.xda-developers.com/lg-g7-thinq/how-to/guide-how-to-flash-stock-firmware-lock-t3820888

djfreaky said:
Charge the phone and See if phone goes into download mode then try to flash stock with lg up.. https://forum.xda-developers.com/lg-g7-thinq/how-to/guide-how-to-flash-stock-firmware-lock-t3820888
Click to expand...
Click to collapse
Ok, it worked. Thank you!

So after flashing the stock os and reflashing twrp, it doesn't see my sdcard when trying to flash. It also doesn't appear in mnt or other folders in the file manager.

Clickau said:
So, i bought a G7 a few days ago and now i wanted to flash aosp pie. I succesfully unlocked the bootloader and then proceded to flash twrp from this tutorial: https://www.cyanogenmods.org/forums/topic/twrp-download-for-lg-g7-and-rooting-guide/ . After i flashed the twrp image through fastboot, i wanted to go into the recovery, but i didn't see how (only later i realized there is an option in bootloader to power off). So i restarted and started to bootloop. In the end i figured out how to get into recovery, by hard resetting the device. But in twrp i couldn't mount any partition or flash anything. Researching more, i found out that i had to be rooted first, which wasn't specified in the tutorial. I went back into bootloader and flashed the boot.img from here: https://forum.xda-developers.com/lg-g7-thinq/development/mod-v16-t3808363 . After rebooting, the phone didn't even show the lg boot animation, and stays on the lg g7 logo. I can't get into the recovery with the hard reset method and i don't know how to power it off. What should i do?
Update: the phone just went off, i think it ran out of battery since it has been in this state for the whole night. I went into bootloader. What to do?
Click to expand...
Click to collapse
The data partition can't be mounted because it is encrypted from stock. You have to format it first. There is still no support for the sdcard and otg but maybe soon.

LameMonster82 said:
The data partition can't be mounted because it is encrypted from stock. You have to format it first. There is still no support for the sdcard and otg but maybe soon.
Click to expand...
Click to collapse
Oh, ok. Thanks.

LameMonster82 said:
The data partition can't be mounted because it is encrypted from stock. You have to format it first. There is still no support for the sdcard and otg but maybe soon.
Click to expand...
Click to collapse
what do you mean by " you have to format it " , how can i do that ?

Claudiu/Cloudy said:
what do you mean by " you have to format it " , how can i do that ?
Click to expand...
Click to collapse
Completely wipe data (factory reset doesn't work)
Edit: TWRP go to wipe menu -> down right button to completely wipe