Database Develop

Downgrade from OOS 4.1.5 to 3.5.x

I am having serious battery drain on any OOS 4.x.x rom. I used to have very good battery life in 3.5.2. can anyone give me a proper step by step guide to downgrade? Battery is a huge issue for me.

i have my own steps that i found it by my self but it will earse all ur data so backup ur data to pc.
here are the steps :
1. make sure u have unlocked bootloader, custom recovery (twrp) i prefer use blu_spark twrp latest version
2. pur ur 3.5.x firmware in internal storage
3. boot to twrp recovery and do a clean wipe(dalvik, data, internal, system, cache)
4. flash ur 3.5.x firmware. it will take a long time just wait it
5. reboot to system, ull get a no os installed warning in twrp just reboot it(swipe)
6. when the devices boot up ull get a enter password for decrypt data. just reboot to bootloader
7. when u in fastboot mode connect ur devices to pc
8. use op3/op3t toolkit to flash twrp from fastboot u can find the toolkit here: https://forum.xda-developers.com/oneplus-3t/development/toolkit-oneplus-3t-toolkit-unlock-t3507729
9. then wait when it boot to twrp and when it boot up wipe data, internal storage only
10. reboot to system. done
sorry for my bad english. i hope it works

Ok that sounds easy. Reboot to recovery after flashing ROM retains the recovery I guess. Do you have any suggestion of custom kernel for 3.5.x ? Also i have the latest twrp. Will is allow me to flash 3.5?

arafat_mw said:
Ok that sounds easy. Reboot to recovery after flashing ROM retains the recovery I guess. Do you have any suggestion of custom kernel for 3.5.x ? Also i have the latest twrp. Will is allow me to flash 3.5?
Click to expand...
Click to collapse
u can try this i guess https://forum.xda-developers.com/on...mm-6-0-1-oxygen-3-5-4-kernel-3-18-48-t3567781

Thank you guys. It wasn't really tough. Flashed OOS 3.5.4 full zip. Rebooted to recovery then rebooted to system. However it was bootloop at the start then I restarted and flashed SuperSU zip, it booted up. Don't know why SuperSU is required to boot up. However I am not getting the support for Magisk. I tried cleaning up SuperSU and then flashing the Magisk zip but it didn't work. Any advice ?

arafat_mw said:
Thank you guys. It wasn't really tough. Flashed OOS 3.5.4 full zip. Rebooted to recovery then rebooted to system. However it was bootloop at the start then I restarted and flashed SuperSU zip, it booted up. Don't know why SuperSU is required to boot up. However I am not getting the support for Magisk. I tried cleaning up SuperSU and then flashing the Magisk zip but it didn't work. Any advice ?
Click to expand...
Click to collapse
You have to reflash stock boot image to get Magisk to work

OOS 5.0 With Root stuck on booting

I was on Oos 4.5.1 and wanted to update to Oreo. I followed the thread on this forum and downloaded the new TWRP BluSpark img file, the OOS full package and the Magisk zip. Booted into recovery, installed the img file and flashed OOS and the Magisk zip file. When i rebooted into system, i noticed Root wasn't installed and my recovery had reverted to stock recovery but my device bootloader was still unlocked. So i booted into fastboot mode, flashed the Blusparks img file and booted into recovery and flashed the magisk file. Now the phone rebooted and its stuck on the "Powered By Android" screen. The boot image of OP hasn't shown up. What do i do? I really don't want to hard reset my phone :/

No need to hard reset the phone, just go to recovery clean flash excluding internal storage then flash oxygen os 5.0 zip file and magisk 14.5.
Magisk 14.0 has boot issues.
I had similar issues which I resolved easily.
You may trigger DM verity flag after booting which you can disable easily.

ersandeepkr said:
No need to hard reset the phone, just go to recovery clean flash excluding internal storage then flash oxygen os 5.0 zip file and magisk 14.5.
Magisk 14.0 has boot issues.
I had similar issues which I resolved easily.
You may trigger DM verity flag after booting which you can disable easily.
Click to expand...
Click to collapse
Oh yes, i figured Magisk 14.0 was the issue. I waited for 30 mins+ and the phone still didnt boot up, so i switched it off and booted into recovery and flashed just the OOS zip file and it worked. I don't want to wipe data as well.
Can i flash Blusparks twrp from adb, boot into recovery and just flash OOS and Magisk 14.5 and wipe dalvik/cache?

Manjumeth-95 said:
Oh yes, i figured Magisk 14.0 was the issue. I waited for 30 mins+ and the phone still didnt boot up, so i switched it off and booted into recovery and flashed just the OOS zip file and it worked. I don't want to wipe data as well.
Can i flash Blusparks twrp from adb, boot into recovery and just flash OOS and Magisk 14.5 and wipe dalvik/cache?
Click to expand...
Click to collapse
You can flash bluspark recovery from fastboot. But for the successful installation and avoid problems, forget the application data. You can fresh install apps which is always recommended while flashing any ROM even if it is updated version. I never dirty flash ROM. I care for internal storage and not for the small apps.
You can try dirty flash as you stated but stability may be an issue.

Dirty flashed with Magisk 14.5 and it worked

Oneplus 6 Bootloop after flashing Magisk over Oxygen OS Beta 11

Here is what I have done:
1. Boot into TWRP recovery
2. Flash OOS 9.0.3 Beta 11 followed by TWRP and Wipe Dalvik Cache
3. Reboot Successfully to android
4. Boot back into TWRP and flash Magisk 18.0 (I also tried 18.1, same result)
5. Bootloop
I've done this multiple times, each time I was able to get back into android before flashing Magisk.
Thank You for your help, much appreciated.

This might go without saying but after flashing Magisk are you also wiping Dalvik?

Nuzzlet said:
Here is what I have done:
1. Boot into TWRP recovery
2. Flash OOS 9.0.3 Beta 11 followed by TWRP and Wipe Dalvik Cache
3. Reboot Successfully to android
4. Boot back into TWRP and flash Magisk 18.0 (I also tried 18.1, same result)
5. Bootloop
I've done this multiple times, each time I was able to get back into android before flashing Magisk.
Thank You for your help, much appreciated.
Click to expand...
Click to collapse
I could be wrong but I do it slightly differently.
1. Boot into TWRP.
2. Flash rom, flash TWRP
3. Reboot TWRP, flash magisk.
4. Reboot system
Works for me.

TLX317 said:
This might go without saying but after flashing Magisk are you also wiping Dalvik?
Click to expand...
Click to collapse
Yes I am
mixlex said:
I could be wrong but I do it slightly differently.
1. Boot into TWRP.
2. Flash rom, flash TWRP
3. Reboot TWRP, flash magisk.
4. Reboot system
Works for me.
Click to expand...
Click to collapse
So I finally made it work by flashing with "Blue" TWRP. I still don't really understand the difference between the official TWRP. Whiel in loop looping after installing magisk, I went back to TWRP, flashed Blue TWRP and it booted. Wen't back intro Blue TWRP and flashed Magisk 18 (Not 18.1, thought that might have been why) and it worked. It confused me because I have successfully flashed magisk with the other TWRP before so I really don't know what fixed this.
Thank you for your help. I think I flashed me rom over 30 times yesterday getting this to work.

Nuzzlet said:
Yes I am
So I finally made it work by flashing with "Blue" TWRP. I still don't really understand the difference between the official TWRP. Whiel in loop looping after installing magisk, I went back to TWRP, flashed Blue TWRP and it booted. Wen't back intro Blue TWRP and flashed Magisk 18 (Not 18.1, thought that might have been why) and it worked. It confused me because I have successfully flashed magisk with the other TWRP before so I really don't know what fixed this.
Thank you for your help. I think I flashed me rom over 30 times yesterday getting this to work.
Click to expand...
Click to collapse
Hi could you please provide me the link to the blue TWRP you have used? I'm stuck in the same situation as you. Pls help

a4abbas said:
Hi could you please provide me the link to the blue TWRP you have used? I'm stuck in the same situation as you. Pls help
Click to expand...
Click to collapse
At the moment I'm just using regular TWRP actually. Havnt used blue since I switched the beta builds. I actually remember having trouble finding a download for Blu spark. What are your issues?

[James] Moto E5 Play won't boot into Custom ROM(s)

Device variant: XT19121-2 James
Chipset: MSM8920
After repeated failed flashes I am on stock firmware using this guide. Phone boots and works normally right now, but I can't seem to flash any Custom ROMs on to my phone. I was using this post to flash Lineage OS 15.1, which worked successfully at first, but the WiFi wasn't working so I reflashed it. It still didn't work so I did it again, wiping Dalvik/Cache too. After the second flash attempt, my phone began to only flicker on and off. I made sure to always clean flash, factory resetting, wiping Cache and Dalvik, even formatting data, but no matter what I do it doesn't work. Also attempted other GSI images (arm, A-only) like AOSP, ResurrectionRemix and phhusson's Lineage OS 15.1 But they all failed too. I am using TWRP for James v 3.3.1 although I did also try other TWRP images like v 3.2.1 . But it makes no difference. Also used Magisk v19 like some guides suggested but whether I have Magisk or not, it doesn't work. Even made sure to push the fstab.qcom file to /vendor. Anytime a Custom ROM is flashed whether zip or GSI img it goes past the initial "bad key" or "N/A" screen and starts flickering on and off. Bootloader and TWRP works fine, but that's about it. Everytime a flash fails I go back to stock firmware (which always works) and try another ROM. I wonder why the first attempt worked but doesn't anymore even if I mirror the exact steps I took from stock. If anyone has any solutions I would be really grateful. Let me know if you need any more information.

have you taken any recent OTA updates?

mikeshutte said:
have you taken any recent OTA updates?
Click to expand...
Click to collapse
Nope. Still on the 8.0.0 version the stock firmware comes in.

tkhan7916 said:
Nope. Still on the 8.0.0 version the stock firmware comes in.
Click to expand...
Click to collapse
Okay give this a try, I'm assuming you have old root access and TWRP installed.
Download any Android 9 GSI of your liking, boot to TWRP.
Do a complete nandroid backup of the stock firmware.
Do a factory reset then wipe system partition.
Next flash your GSI that you downloaded to your system partition.
After flashing is complete of the GSI reboot to recovery.
After reboot completed flash your open Gapps zip. Then reflash Magisk.
if you get a error message when flashing g apps then you will need to use magic g apps with magisk as it will install them systemless. I have to do this on my device because the partition doesn't have enough space.
Give that a try and let me know how it goes if you have any questions feel free to ask.
---------- Post added at 10:09 PM ---------- Previous post was at 09:59 PM ----------
tkhan7916 said:
Nope. Still on the 8.0.0 version the stock firmware comes in.
Click to expand...
Click to collapse
mikeshutte said:
Okay give this a try, I'm assuming you have old root access and TWRP installed.
Download any Android 9 GSI of your liking, boot to TWRP.
Do a complete nandroid backup of the stock firmware.
Do a factory reset then wipe system partition.
Next flash your GSI that you downloaded to your system partition.
After flashing is complete of the GSI reboot to recovery.
After reboot completed flash your open Gapps zip. Then reflash Magisk.
if you get a error message when flashing g apps then you will need to use magic g apps with magisk as it will install them systemless. I have to do this on my device because the partition doesn't have enough space.
Give that a try and let me know how it goes if you have any questions feel free to ask.
Click to expand...
Click to collapse
I also just noticed you are using the latest version of TWRP 3.3.1. I'm not sure if you originally rooted and installed TWRP with the original patched version by Cody or not, but if so make sure with the new version that you format your data partition to f2fs. As this will ensure correct mounting of the data partition.

mikeshutte said:
Okay give this a try, I'm assuming you have old root access and TWRP installed.
Download any Android 9 GSI of your liking, boot to TWRP.
Do a complete nandroid backup of the stock firmware.
Do a factory reset then wipe system partition.
Next flash your GSI that you downloaded to your system partition.
After flashing is complete of the GSI reboot to recovery.
After reboot completed flash your open Gapps zip. Then reflash Magisk.
if you get a error message when flashing g apps then you will need to use magic g apps with magisk as it will install them systemless. I have to do this on my device because the partition doesn't have enough space.
Give that a try and let me know how it goes if you have any questions feel free to ask.
Click to expand...
Click to collapse
Followed these steps exactly, including formatting the data partition to f2fs, and the same problem still persists. Screen just keeps turning on and off in a loop without booting into the ROM. I downloaded the Lineage OS 16.0 GSI A-only Arm version for reference.

I am having the same issue
Using XT1921-1
Latest TWRP
Have tried LOS 15, LOS 16, AOSP 8.1, AOSP 9.0
Have tried flashing in fastboot and TWRP
Have tried every combo of wipe/factory reset/format data and magisk flash possible
have tried stock recovery, have tried no verity, have tried stock boot.img
nothing works. only able to produce powered on (black and blank) screen that turns on and off for a minute before returning to bootloader
PLEASE HELP
think i might need a 8.0 GSI but cant find one anywhere

I eventually got RR to boot on the james xt-1921-3 I installed XT1921-3_JAMES_T_MPCS_8.0.0_OCPS27.91-150-5-1-3_cid21 as a base, then used boot and vendor partitions from JAMES_T_OCP27.91-51-4_cid21_subsidy-TMO_RSU_regulatory-DEFAULT_CFC and it finally worked.

tkhan7916 said:
Followed these steps exactly, including formatting the data partition to f2fs, and the same problem still persists. Screen just keeps turning on and off in a loop without booting into the ROM. I downloaded the Lineage OS 16.0 GSI A-only Arm version for reference.
Click to expand...
Click to collapse
Message me, I'll host a TWRP backup for the XT-1921-3 that boots RR 6.1

Download the file from this post https://forum.xda-developers.com/android/software/universal-dm-verity-forceencrypt-t3817389 , then using fastboot, flash the vendor and boot img
fastboot flash vendor vendor.img
fastboot flash boot boot.img
then boot into recovery and flash the file from that post to disable dm-verity and force encrytion, after that flash magisk, then reboot to bootloader, at command prompt-
fastboot erase userdata
fastboot erase cache
fastboot reboot
that should get you booted - profit

mrbox23 said:
Message me, I'll host a TWRP backup for the XT-1921-3 that boots RR 6.1
Click to expand...
Click to collapse
Do you still have that back up by any chance and could ypu send it to me?

Error while installing Magisk through Magisk manager

I'm trying to instal Magisk 19.3 through Magisk Manager Version: v7.3.4
and getting this error:
Device platform: arm64-v8a
Coping image to cache
unpacking boot image
!unsupported/unknown image format
!installation failed
Any ideas how to solve it?
I have used Stable Magisk Version: v19.3 (also tried Beta Magisk Version: v19.4)

Maybe something's wrong with the boot image? Try to re-download magisk stable zip and reintall it via TWRP.

@LogicalMaverick, tried to download it again from this thread https://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445 but still the same error message
I did try to install in TWRP mode and also from the Magisk Manager and still not working.
When I install in TWRP mode the result is the phone is getting into loop mode and the only way out if it is to uninstall it

try to wipe data after flashing magisk before booting to system

Kzak25 said:
try to wipe data after flashing magisk before booting to system
Click to expand...
Click to collapse
Yeah, for me there are 2 ways:
1. Wipe data after flashing magisk before booting system
2. Complete phone setup first after installing new ROM, and then boot into recovery, then you're good to install magisk

Kzak25 said:
try to wipe data after flashing magisk before booting to system
Click to expand...
Click to collapse
Didn't work. Still getting to the same issue where the phone is stuck in bootloop and the only way out of it is to uninstall Magisk

What phone are you using?

cohenelad said:
Didn't work. Still getting to the same issue where the phone is stuck in bootloop and the only way out of it is to uninstall Magisk
Click to expand...
Click to collapse
are you on stock or custom ROM (if stock what MIUI Ver)

Kzak25 said:
are you on stock or custom ROM (if stock what MIUI Ver)
Click to expand...
Click to collapse
I'm on stock ROM.
Was on MIUI 10.3.2 Now I'm on 10.4.8.
Tried to install Magisk on bot ROM through TWRP and didn't work.
Tried also through Magisk manager and didn't work
When I installed TWRP on my phone it asked if I want to give it permission to modify the system or to leave it read only mode.
I choose read only mode as I thought it will be easier to get OTA updates.
Maybe that's the reason Magisk cannot be installed correctly ?
TIA for your help

cohenelad said:
I'm on stock ROM.
Was on MIUI 10.3.2 Now I'm on 10.4.8.
Tried to install Magisk on bot ROM through TWRP and didn't work.
Tried also through Magisk manager and didn't work
When I installed TWRP on my phone it asked if I want to give it permission to modify the system or to leave it read only mode.
I choose read only mode as I thought it will be easier to get OTA updates.
Maybe that's the reason Magisk cannot be installed correctly ?
TIA for your help
Click to expand...
Click to collapse
Yeah i think you should give TWRP all permission when you boot into it the first time
you can re-flash TWRP and try again

reboots to fastboot
Kzak25 said:
Yeah i think you should give TWRP all permission when you boot into it the first time
you can re-flash TWRP and try again
Click to expand...
Click to collapse
I can flash over twrp. then it says no rom installed so flash over magisk-error unknown image. this is a fresh download tried 3 new downloads same error. use adb sideload to flash rom. successful do the reboot and it reboots to fastboot. what do i do