[SOLVED] Bootloop when trying to downgrade from Android 8.1 (LineageOS 15.1) to 7.1. - ONE Q&A, Help & Troubleshooting

I have the following installed:
[url]https://forum.xda-developers.com/oneplus-one/development/8-0-0r3-lineageos-15-0-t3670670[/URL]
Android: LineageOS 15.1 (8.1.0_r4) with latest magisk installed (15.3) with unofficial opengapps 8.1 mini package
When I try to downgrade to either Lineage 14.1 official or carbonrom 5.1 I am getting a boot loop at the oneplus logo. Restoring from backup to 8.1 resolves the issue.
1. factory reset
2. wipe system
3. Install Lineage 14.1 or carbonrom 5.1
4. Install recent opengapps mini package for 7.1.2
4. Reboot
The phone boot loops at the oneplus logo and I end up restoring from backup.
I have looked online and was struggling to find anything relevant. Some people report a new battery solved the issue but since It works when I restore from the backup It doesn't seem to be that. I do have a new battery on hand that I am eventually going to install though so I can do that.
Apologies if I am missing something obvious.

-Snowrider- said:
I have the following installed:
https://forum.xda-developers.com/oneplus-one/development/8-0-0r3-lineageos-15-0-t3670670
Android: LineageOS 15.1 (8.1.0_r4) with latest magisk installed (15.3) with unofficial opengapps 8.1 mini package
When I try to downgrade to either Lineage 14.1 official or carbonrom 5.1 I am getting a boot loop at the oneplus logo. Restoring from backup to 8.1 resolves the issue.
1. factory reset
2. wipe system
3. Install Lineage 14.1 or carbonrom 5.1
4. Install recent opengapps mini package for 7.1.2
4. Reboot
The phone boot loops at the oneplus logo and I end up restoring from backup.
I have looked online and was struggling to find anything relevant. Some people report a new battery solved the issue but since It works when I restore from the backup It doesn't seem to be that. I do have a new battery on hand that I am eventually going to install though so I can do that.
Apologies if I am missing something obvious.
Click to expand...
Click to collapse
Try the following :
-uninstall magisk using uninstaller(available in magisk forum)
-clear system,data,cache,dalvik
-install only the rom with out gapps
if it boots properly then you can install the gapps later or else if u find flashing gapps is causing the bootloop then use an older version and double check the compatibility.
if still not just try out another nougat rom

Thanks for the suggestion.
I tried your steps with the latest stable slimrom 7.1.2, lineage 14.1 and carbonrom 5.1 and I am still seeing the same issue. I was able to clean install the lineage 15.1 beta I linked to though in addition to restoring my backup as I have done before. I might try to clean install a different 8.1 (AOSP for example) and see if that one works. This will help narrow down if the issue is caused by 8.1 in general or specifically something that the lineage 15.1 beta has done.

I had a similar problem when I flashed Sultan's LOS14.1. I fixed it by flashing down to stock using wugfresh's bacon root toolkit. Keep in mind though that this will wipe EVERYTHING on your phone. Hope it doesn't come to that. Best of luck!

CedArctic said:
I had a similar problem when I flashed Sultan's LOS14.1. I fixed it by flashing down to stock using wugfresh's bacon root toolkit. Keep in mind though that this will wipe EVERYTHING on your phone. Hope it doesn't come to that. Best of luck!
Click to expand...
Click to collapse
This is what I ended up doing and it did the trick. Thank you for the suggestion.

Related

problem installation lineageos

Hi all, i have a problem whan i install lineage os, i don't have any system on my oneplus one and i want install lineage but when the installation has finished, my phone restart and freeze on logo one plus one android powered.
if you have a solution ;D
good night
LucasJahier said:
Hi all, i have a problem whan i install lineage os, i don't have any system on my oneplus one and i want install lineage but when the installation has finished, my phone restart and freeze on logo one plus one android powered.
if you have a solution ;D
good night
Click to expand...
Click to collapse
Which firmware were you on? Which recovery you used?
Did you tried previous lineage os nightly's?
I don't know what firmware i m and i have try with the latest nighly release. And i use the latest version of twrp
LucasJahier said:
I don't know what firmware i m and i have try with the latest nighly release. And i use the latest version of twrp
Click to expand...
Click to collapse
Go to setting > about phone and see Baseband version.
If you're coming from CM13.1 make sure to wipe everything except internal storage.
Download the ROM again if possible (the version you have downloaded may be corrupted) from the Lineage os official site and gapps(micro or pico).
Flash the ROM first and then gapps.
Reboot your device.
If you want the Root access download the Su add-on from the Lineage website also.
Hope it will work.
Let us know.
Thanks.
Re
Re,
Sorry... but i don't have any os in my oneplus one... he is empty exept zip the lastest version of official website and zip of gapps.
Thank you

Constant Reboot

I had the official Lineage 15.1 installed with gapps pico, it was upgraded from 14.1 lineage with gapps pico + magisk 16 . Today I wanted to downgrade back to 14.1 so I flashed the latest 14.1 lineage with gapps 7.1
After booting it shows com.android.phone has stopped working and it restarts again to show the same thing.
I am able to get into TWRP recovery , can anyone please suggest me what should I do?
I dont have previous backup
Mmodi said:
I had the official Lineage 15.1 installed with gapps pico, it was upgraded from 14.1 lineage with gapps pico + magisk 16 . Today I wanted to downgrade back to 14.1 so I flashed the latest 14.1 lineage with gapps 7.1
After booting it shows com.android.phone has stopped working and it restarts again to show the same thing.
I am able to get into TWRP recovery , can anyone please suggest me what should I do?
I dont have previous backup
Click to expand...
Click to collapse
I did a factory reset using TWRP . Lost all the data but the phone started, able to use it now
Mmodi said:
I did a factory reset using TWRP . Lost all the data but the phone started, able to use it now
Click to expand...
Click to collapse
Always do a clean wipe (wipe everything except internal/external storage). Always back up your previous system just in case. Sometimes it is better to flash Gapps right after flashing the ROM, sometimes it's better to flash the ROM, boot and then flash the Gapps.

OFFICIAL LINEAGE OS 16 was released but was taken down?

They made a wiki on Beryllium (https://wiki.lineageos.org/devices/beryllium) and some other links to the official build (https://download.lineageos.org/beryllium) but they removed it.
I don't know what was the reason.
They rolling out the Lineage 16 PIE on couple devices like Oneplus 5/5T, Huawei P20 Pro, Xiaomi Mi Note 3, etc. (https://www.androidpolice.com/2019/...1-oneplus-phones-galaxy-s5-and-other-devices/)
wasn't released it failed but it is expected to succeed soon.
bower1994 said:
wasn't released it failed but it is expected to succeed soon.
Click to expand...
Click to collapse
Thank you for the response, out of curiosity, what was failed in the latest official build?
https://gitlab.com/LineageOS/builder/android/pipelines/49950700/builds
Yesterday all builds failed on that user/server
#### build completed successfully (01:34:25 (hh:mm:ss)) #### Guess we can expect a build in a few hours?
The nightly is available now
The inital nightly build seems to be broken, at least for me. Can't boot into system.
Same here, installed via adb sideload. system displays the boot animation for a while, then I end up in recovery every time.
tiantnait said:
Same here, installed via adb sideload. system displays the boot animation for a while, then I end up in recovery every time.
Click to expand...
Click to collapse
I tried again, this time flashing the 9.2.25 vendor firmware instead of 9.3.1, LOS flash also via sideload. It's working now!
no problems here.. clean flash, flashed firmware 9.2.25, los official nightly, pico gapps and magisk 18.2, wipe cache/dalvik and reboot. it runs awesome
Strel0ka said:
I tried again, this time flashing the 9.2.25 vendor firmware instead of 9.3.1, LOS flash also via sideload. It's working now!
Click to expand...
Click to collapse
No luck here. I also tried flashing 9.2.25 first (had 9.2.21 before). Still same boot loop. Must be something else.
(magisk, no google services, encrypted fs, not a clean install [update from UNOFFICAL 20190220])
going back to UNOFFICAL build works fine for now...
tiantnait said:
No luck here. I also tried flashing 9.2.25 first (had 9.2.21 before). Still same boot loop. Must be something else.
(magisk, no google services, encrypted fs, not a clean install [update from UNOFFICAL 20190220])
going back to UNOFFICAL build works fine for now...
Click to expand...
Click to collapse
So you performed a dirty flash of official LOS over unofficial LOS? That's like dirty flashing NOS over LOS. If you want to switch over to the official branch, I highly recommend starting from scratch.
My current setup is official LOS with microg + magisk and Encryption, no issues so far.
Yep.. Official build is on!

Problem with battery - stuck at 50%

Hi,
I'm having trouble with my battery indicator, i will explain what i did step by step before getting this problem.
I installed Multiboot patch in PixelExperience (Pie - Kenga version)
After update the ramdisk, my rom didn't boot
Using twrp, i installed a new rom, (LOS 14.1 which i had in internal memory)
My phone booted again but the battery indicator is always at 50% (even in twrp)
The strange part, when i install some custom kernel (watermelon for example) my battery indicator comes back to normal (only in rom)...
Any suggestion?
Thanks in advance
Edit: It seems Pie roms works fine, if I install a older rom appears. But if i install a Pie kernel in a older rom the problem is solved
Howto
Hello,
With LineageOs 15.1 I was very happy. Suddenly, after about 2 years of use, I have the same problem. With factory reset it is not solved, wiping all partitions, copying the same ROM again and install, the problem continues.
I tested LineageOS 16, but it works slow and I have several problems with permissions (Apps does not ask for them and I have to assign them manually). With LineageOS 17, a lot of problems for install gapps.
I was thinking about testing LineageOS 14.1.
With "But if i install a Pie kernel in a older rom the problem is solved", I guess you are talking about install Pie kernel in LineageOS 15.1 for example, right? If yes, is it difficult? could you provide me the steps for it? Did you have any additional problem after this? Maybe the only solution for me if with LineageOS 14.1 the problem continues.
Thanks.

[solved] Reboot to twrp when installing latest lineage16

Hello
Strange think for me, maybe not for you
I switch from carbon 8 and came back to lineage 16.
I'm not able to achieved installation with latest lineage 16, lineage microG or lineage17. Flashing the new rom works well, but after lineage home screen, the phone reboot to recovery.
With an lineage16 old version from 03/2019,install is ok and phone boot well.
I've suspected an old twrp version, but I'm on 3.3.1.0.
Any idea ?
thank you
it's the same with an old twrp version 3.2.
Ok, solved. You shouldn't install twrp as an app before rebooting to new os version.

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