Develop Bugs

[Q] Stuck in loop while upgrading OTA Lollipop

Got the OTA Lollipop update today via the Software Centre in the phone. Downloaded and proceeded to install the update V20e-DEC-03-2014 and everything was going fine until I got to Updating Software (2/2) at 90% when the thing just stays there, then this jumbled text appears (attached image) and then it'll reboot back to this screen. And it just keeps doing so every few minutes.
Now I'm stuck in this cycle, and I can't seem to get out of it. Please help!

derrickflc said:
Got the OTA Lollipop update today via the Software Centre in the phone. Downloaded and proceeded to install the update V20e-DEC-03-2014 and everything was going fine until I got to Updating Software (2/2) at 90% when the thing just stays there, then this jumbled text appears (attached image) and then it'll reboot back to this screen. And it just keeps doing so every few minutes.
Now I'm stuck in this cycle, and I can't seem to get out of it. Please help!
Click to expand...
Click to collapse
Okay first off, were you rooted or Bump'd? That shouldn't have caused what appears to be the start of some sort of kernel panic, but it may be an underlying issue. It may also have just been a bad download that flashed incorrectly. Either way, try returning to stock and taking the OTA straight from the stock rom if you dont care about rooting or running custom roms. Otherwise, immediately root and Bump your phone after returning to stock and never ever take an OTA update as it could seriously screw you up. With all that said, here is the link to return your G3 to stock, just be sure to choose your exact model number correctly.
http://forum.xda-developers.com/showthread.php?t=2799647
If you don't know what your model number is, take off your battery cover, remove the battery, check the model from the info sticker and verify that it matches the numbers posted around the inside edge of the phone (D850, vs985, ls990, D855, F400k, something like that).

[Q]Damage/Flaws

1st [Q] Did someone experienced bricking m2?
2nd [Q] Do you have a white spot on your m2? (not a dead pixel)

2nd: no visible issues

I!??!?! why!?!?!?!??!

Caelestiel said:
1st [Q] Did someone experienced bricking m2?
Click to expand...
Click to collapse
Depends on the definition of "brick".
As explained in this thread, I had a situation where the main ROM would not boot; it would just be stuck at the Mediapad M2 boot logo. However, I was still able to access recovery and fastboot modes. So I was able to recover from the brick situation by flashing the BOOT.img, DATA.img and SYSTEM.img from an 801L on my 802L ( I had not yet found an official 802L ROM). Even though my phone model became "801L", it still worked for me. Later, after much hunting around I found an official 802L ROM (B003), flashed it on my phone and got back to a standard stock phone configuration.
In another situation, I had a constant boot-loop problem after installing SuperSU 2.79 as the root app on Marshmallow ROM build B207. The phone would boot up, show the "Mediapad M2" boot logo, then reboot immediately. This kept on happening. However, like before I was still able to access recovery and fastboot modes so I was able to repair the situation in the same manner as described above. That is why I finally wrote this guide - to help other people who may be in the same situation.

LG G4 boot loop into TWRP

Hello everyone,
yesterday I flashed a new Cyanogenmod 14 nightly (12062016) for my G4 from earlier nightly in TWRP. After reboot the phone keeps going back to TWRP and I can't seem to get it to boot to system..
I tried factory reset, reflashing back to old nightly, flashing stock.. but nothing seems to work.
Also tried doing this in the TWRP terminal:
dd[space]if=/dev/zero[space]of=/dev/block/platform/f9824900.sdhci/by-name/fota
Didn't fix the loop, I guess because it wasn't the OTA update that caused the problem in the first place.
If anyone has an idea, I would greatly appreciate the help!
Thanks.

If you can reach download mode you could try reflashing back to stock then starting again.....Hope you get yours fixed - Sorry to say this but mine did a very similar thing only 24 hours before you posted!!! Only mine was on stock FW and was in use at the time - I've now had to swap it as valuebasket who sold me the phone have ceased trading. If yours is a UK model you may be able to get it replaced under warranty - believe that LG guarantee their phones for 2 years and a ruling by the European court said that flashing a custom rom doesn't invalidate any warranties.

I have the same exact issue, I also flashed the latest CM14 nightly and cannot get the device to boot any rom.
I have even tried flashing stock rom but I get the same problem.
From what I have read, the bootloop issue happens once the device boots but I don't seem to be getting that far.
Any ideas?

Ran into the same problem 3 days ago. This is the first time I have encountered a non-revertible issue in 3 years as a cyanogenmod user. This changes my opinion on how safe it is to make use of a custom ROM. I tried to wipe everything, reinstall TWRP, change TWRP with another recovery, reinstall a safe NAND backup of mine.....nothing.....it went into boot loop. Before I read this post, I was convinced my phone encountered the infamous G4 bootloop problem.....now I see there are other examples, so it shouldn't be the case. Long story short, I had to check my device in at the LG assistance, with 25 days as time forecast.
The guilty nightly was 20161205.
I have never seen anything like this...

This has solved it for me - I installed LG Bridge and flashed the factory firmware using the tool. Now it seems I'm back on stock but at least it's working.

got mine working. I had to install LGUP and flash stock ROM. Once flashed I installed CM14 and I am back up and running again.

I tried LGUP but it could not recognize the device while this was looping.....a bad experience......

I have the same issue. My phone was updated to 20i via the original stock firmware, then I put twrp 3.0.2-0 and cyanogenmod on. I did a cyanogenmod update from within cyanogenmod, which just booted into twrp, then I manually installed the update zip that cyanogenmod had downloaded, then it always boots into twrp. I wonder if initiating the update from within cyanogenmod was the cause. The phone is not detected by LGUP or LG Bridge. I've tried this on a win10 machine, and a win7 vm from linux. I have access to twrp, and download mode by doing the reboot into bootloader from within twrp.
If those people who have fixed this could give more details about how they did it, that would be good. What exact steps did you take? What stock firmware version did you have before installing a custom rom? What OS version were you using? What twrp version?

Well. Mine got stuck in bootloop for the second time today. What is going on? In between the two bootloops I had one good update with CM. Using TWRP 3.0.2.1. Steps to reproduce failure: updating CM from within CM, it autoreboots into TWRP and after that nothing happends, no autoinstall. Then after a manual install of the new CM the bootloop starts.
Resolve the problem:
* Install LGUP 8994 DLL Ver 0 0 3 23, Install LGUP Install Ver 1 14, get the latest KDZ
* Get the phone into download mode with usb cable and after that in firmware update mode
* Startup LGUP and choose refurbish and select the kdz file.
* After that you can boot into your stock LG firmware again, reinstall TWRP an CM. If you want so.

Read that it is advised to manual update cm from within TWRP. TWRP will get an update in the future to solve this bootloop problem.

iankelling said:
I have the same issue. My phone was updated to 20i via the original stock firmware, then I put twrp 3.0.2-0 and cyanogenmod on. After a cyanogenmod update, it always boots into twrp. The phone is not detected by LGUP or LG Bridge. I've tried this on a win10 machine, and a win7 vm from linux. I have access to twrp, and download mode by doing the reboot into bootloader from within twrp.
If those people who have fixed this could give more details about how they did it, that would be good. What exact steps did you take? What stock firmware version did you have before installing a custom rom? What OS version were you using? What twrp version?
Click to expand...
Click to collapse
I second that. Same issue and neither LG Up nor LG Bridge will recognize my device. Looking in device manager there are no serial interfaces. Do I need a special driver that provides a com port for a phone in recovery or fastboot mode?
---Edith 2016-12-12: Found a solution for my issue:
The phone has to be in _download_ mode, not in recovery or fastboot. After realizing that I have to boot the phone in a different manner, it will be recognized by LG UP.
Here is how to boot the pone in download-mode:
- Power off your LG device.
- Press and hold Volume Up button.
- Connect your device to PC with a USB cable while holding the Volume Up button.
- You’ll boot into download mode with “Firmware Update” written on top of the screen.
Now everything is fine again.

croclacrimae said:
Hello everyone,
yesterday I flashed a new Cyanogenmod 14 nightly (12062016) for my G4 from earlier nightly in TWRP. After reboot the phone keeps going back to TWRP and I can't seem to get it to boot to system..
I tried factory reset, reflashing back to old nightly, flashing stock.. but nothing seems to work.
Also tried doing this in the TWRP terminal:
dd[space]if=/dev/zero[space]of=/dev/block/platform/f9824900.sdhci/by-name/fota
Didn't fix the loop, I guess because it wasn't the OTA update that caused the problem in the first place.
If anyone has an idea, I would greatly appreciate the help!
Thanks.
Click to expand...
Click to collapse
I was able to get out of that by also wiping by-name/misc. Don't do that, though, because then your wifi mac address will get messed up and you'll spend all day looking for a permanent fix for that.
I suggest reflashing a stock KDZ using LGUP, as others have said. You can get the usb drivers from LG Bridge.

I will release a fix for that soon. Check the twrp thread for updates on this.

Hi
I also have this problem
I installed cm-14.1-20161201-NIGHTLY-h815 successfully and was running it for almost 2 weeks without issues, today I updated to cm-14.1-20161213-NIGHTLY-h815 from cmupdater and I have been ending up in recovery every time I rebooted.
I tried flashing the latest cm recovery and reflashing the rom, with full wipes but no luck.
Full steps of recovering would be appreciated (for example, there are comments about flashing the latest stock rom, but a link to this rom would be helpful)
Thanks

Good news regarding this:
http://forum.xda-developers.com/showpost.php?p=70082901&postcount=213
The above will fix TWRP bootloop issues as well and I also released a first h811 version which should allow installing CM etc as it should.
Keep in mind that this is a BETA and not an official TWRP release.
Please report back in the above thread!
.

Does your twrp beta really fix the boot loop even it is already happening. What do I have to wipe? I have not managed to get out of the boot loop despite intalling it.
Is using using LG Up to flash to the stock rom really the only option?
Edited 2017-01-25 2:45 pm:
Well, sometimes you just have to be patient. Powered down the phone and when th H815 restarted CM did boot. Great. :good:

Hey, I just want to share a small detail, possibly a fluke that helped me overcome the bootloop.
So...I started with a fresh, stock H815, I don't quite remember the firmware version..it was something like version "20g"..
OK, I looked up several guides and tried to get the newest stable versions of each tool. I went through with the official bootloader unlock, then moved on to rooting: Kingroot didn't work for me so I went on installing twrp in fastboot mode so I could afterwards install supersu and root.
I got there eventually but first I was stuck in bootloop - kept ending up in twrp interface. I found the 2 dd commands but those didn't work for me as the msm_sdcc folder did not exist, but instead there was a "f9824900.sdhci". Tried to overwrite this one ...but as others have stated as well, it didn't work.
At that point, I had nothing to lose, I was starting to accept that I had soft-bricked my precious G4 so..I went on installing the DU 10.6 7.1.1 rom and the stock gapps, wiped dalvik, rebooted and held my breath...not literally
About 12 minutes later, after an endless red, spinning logo, my shiny ping pong paddle showed me a different screen, a fresh start welcome screen .
Almost 24h / 10-12 reboots (twrp included) / 70+ apps installed and removed later, the new OS holds around 2G ram average, a bit better battery life, smoother transitions, flawless navigation, flush streaming over both 3G/LTE & 2.4/5 G wifi.
FYI the reboots were intended, wanted to see consistency in boots - we're in the green . Now testing long term stability with moderate/high usage.
There is 1 aspect I noticed, there are a couple of contexts when the interface burps (several menus, various situations, never in apps) and resets back to homescreen...but I think that's more of a launcher topic than an OS one.
Other than that, so far I'm happy with the mod.
Hope my experience helps others that might be in the same spot I was or at lest boosts their confidence to try out a decent idea they might be pondering.

Bootloop without solution? happened suddenly

Hi everyone.
I have been reading a few posts about bootloops in hopes that someone would have been facing the same issue as me. It seems my case is a bit different. I am desperate for some help!
My Max 3 came initially with a chinese ROM but I followed some wonderful tutorials here and I unlocked it and installed initially the xiaomi.eu ROM. Then a couple of months later I installed AOSiP ROM, I updated it a couple of times dirty flashing over it, and settled in exactly the "AOSiP-9.0-Pizza-nitrogen-20190719" build. And there i was, for 4 months, all stable, then suddenly today I was going to unlock the phone with my fingerprint and asked for password.
This happens exactly 1 time per day but I noticed that today it was the second time. Then doesn't matter how many times I put my password correctly, it would keep asking for my password. So I decided to restart the device... and then the bootloop issue started. It starts, reaches the moment in which the AOSiP logo shows and (not even 1 second until the logo shows) freezes, and restarts the device.
I can access the recovery without issues so I didn't panic yet, I backed up all I could, wiped everything I could, started from zero: firmware 9.9.3 + AOSiP-9.0-Pizza-nitrogen-20191117 + gapps. The bootloop still there, in exactly the same way. So at this point I have no clue what could be the reason. I was always careful not to trigger any anti-rollback, it was all going good, now not even with a full factory reset seems to work. I even reinstalled the recovery.
Any ideas? does anyone know what could I try next? Thank you very much advance.

I forgot to attach some logs. I got using the TWRP Advanced > Copy Log option.

Well, I guess I completely screwed it now. I had the brilliant idea to go back to some of the original steps I did way back and flashed an old xiaomi.eu ROM "xiaomi.eu_multi_MIMAX3_8.8.9_v10-8.1", that completely bricked the phone. Screen doesn't even turn on anymore. Is it the end for my Max 3?

diegoocampo said:
Well, I guess I completely screwed it now. I had the brilliant idea to go back to some of the original steps I did way back and flashed an old xiaomi.eu ROM "xiaomi.eu_multi_MIMAX3_8.8.9_v10-8.1", that completely bricked the phone. Screen doesn't even turn on anymore. Is it the end for my Max 3?
Click to expand...
Click to collapse
The mi max 3 has arb enabled, so flashing old rom can cause it to brick.

Have you tried different button combinations to enter fastboot? If you can get to fastboot, just flash a fastboot rom, if that works.
If the brick is caused by triggering ARB, then that may cause some issues, and may need an Authorized Account to flash the ROM from scratch, with some qualcomm flashing tools things.
Though, there may be some way to bypass the authorization for mi max 3 on the internet and have your device unbricked.

Thank you for your replies. Yes probably ARB, I thought my phone had never installed a ROM with ARB and so I was safe to install xiaomi.eu_multi_MIMAX3_8.8.9_v10-8.1 (which it is also to be pre-ARB), but I guess I made a mistake at some point.
Situation now:
- with Mi Flash I am getting the authorization error with almost any ROM, with very old ROMs I am not even able to start the flashing process
- with Qualcomm QFIL tool I always get an error "function: sahara_rx_data:237 Unable to read packet header. Only read 0 bytes". And I also tried with the patched files from here https://forum.xda-developers.com/redmi-note-5-pro/how-to/fix-arb-bricked-device-qfil-t3841780
I think at this point I tried everything that can be tried. My bootloader was unlocked, but at this point I am not even sure if its unlocked anymore since I can't see anything on the device screen.
The only positive thing is that the phone always shows under the Windows 10 device manager "Qualcomm HS-USB QDLoader 9008", so at least is a bit alive, and with the Mi Flash at least for some ROMs starts the flash process. I am not sure if disassembling it and trying things like removing the batter would make any difference.
If anyone knows any other way to bypass authorization please let me know.

Here I am back with another update:
- I fixed the full brick by disassembling the phone and disconnecting the battery, with the battery disconnected I could finally flash a Chinese ROM. That however was just the beginning... more problems came
- Common problem I guess is that after booting with that Chinese ROM i was getting a message about how the encryption was interrupted. This was easy, just changed the file system of Data and formatted it and it was fixed.
- Now I am stuck in another hard to solve problem. Any ROM that boots will not allow me to use WiFi or SIM cards. And the reason is that the IMEI is not set anymore. Reading about it I see that this is related with the EFS partition being corrupted. Nothing seems to work now. I don't have any EFS backup . Anyone knows how to fix the IMEI in this case?

I have hit a wall

Hello everyone, Merry Christmas!
Although I say that, I bring not so merry news. My OnePlus 7T is bricked and after trying everything I don't know where to go from here. Currently I am stuck at the:
The current image (boot/recovery) has been destroyed​phase of things and all I can do is boot into fastboot, that is it.
How did this all start? All I did was just update the phone to Android 12 with the official OTA update from OnePlus, big mistake. Worst update ever; my adaptive brightness went haywire, the brightness gets stuck at max, I couldn't receive calls, data was completely unresponsive, and the list goes on. So before the obvious downgrade method, I try a few things first:
Cycle airplane mode on/off
Reset network settings
Reset ANR
These worked for a minute on my data then right back to the same issue.
Wipe cache partition... Oh wait I had to find out the hard way Android 12 removed this option....
Wipe the phone
That fixed nothing.
Ok time to downgrade, but this is where things got tricky and I realized that maybe all my issues stemmed from me getting the wrong update from OnePlus? Although I found this out too late.
See my phone model is HD1907 which I already knew at the back of my head, but when it mattered to remember the most, I didn't catch what happened. After my update to A12, my model number changed to HD1901 which is the Indian version, and when I saw it didn't think anything of it at the time but then after all my problems it came back to me, my phone has always HD1907 so maybe this is a compatibility issue.
Anyway since I was going to downgrade anyway I thought to myself, 'since I already wiped everything, maybe I can use this opportunity to try out a ROM for A12 and see if it is just this ****ty OOS causing all these issues,' and so I did. First thing I did was unlock the bootloader, and try get TWRP on my phone. That all went fine, I booted into TWRP, flashed my zip for TWRP, then proceeded to try to boot into the OS... and the rest is history because that is as far as I got. Apparently my boot.img is destroyed and I can't boot back into TWRP anymore either, all I can do is get to fastboot.
So then I tried MSM, it won't detect my phone.... So then I tried flashing my Stock ROM through fastboot, apparently I'm missing a partition and it won't write to a critical partition either....
So where do I go from here...?

Hello I was in the exact same boat as you today same phone, same update issues, same no recovery mode, no os to boot into only greeted with fastboot mode. I have resolved it and I'm back on oos 11 good as new. I did use the msm tool it is tricky for sure at first. A critical step is installing the qualcomm drivers and then rebooting your pc. Get them here
https://androiddatahost.com/nbyn6. Be sure to reboot. It's late and I just got this thing back into working shape so I don't want to write a lot a right now. It's been a few days since this post so... If you are still stuck I will be glad to help out let me know. There is hope!

Canbeit said:
Hello I was in the exact same boat as you today same phone, same update issues, same no recovery mode, no os to boot into only greeted with fastboot mode. I have resolved it and I'm back on oos 11 good as new. I did use the msm tool it is tricky for sure at first. A critical step is installing the qualcomm drivers and then rebooting your pc. Get them here
https://androiddatahost.com/nbyn6. Be sure to reboot. It's late and I just got this thing back into working shape so I don't want to write a lot a right now. It's been a few days since this post so... If you are still stuck I will be glad to help out let me know. There is hope!
Click to expand...
Click to collapse
I too had all the symptoms after an update to OOS12, including progressively losing any semblance of booting. not even recovery and the drivers found elsewhere didn't work, and had a different name when installed and would never get detected in the MsmDownloadTool. After installing this one and rebooting, it finally detects it and installs the image of EDL mode.