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Can't Update after Unroot

I rooted my OP3 but for some reasons installed stock ROM in TWRP and then flashed Stock Recovery. But now Update 3.2.4 fails in stock recovery and I can't sideload it neither the full ROM.
I appreciate any leads.
Thank you

If you don't have them already, download the latest version of TWRP twrp-3.0.2-1-oneplus3.img as well as the latest ROM OnePlus3Oxygen_16_OTA_013_all_1608061823_765c081a5c8e4dad.zip.
go into fastboot and run `fastboot flash recovery twrp-3.0.2-1-oneplus3.img` to reflash TWRP
reboot into recovery
flash/install OnePlus3Oxygen_16_OTA_013_all_1608061823_765c081a5c8e4dad.zip then press "Wipe cache/dalvik"
if you don't want to keep TWRP and root you can reboot system now and be finished, otherwise flash/install twrp-3.0.2-1-oneplus3.img to Recovery partition (click "Install Image" to make the file visible)
reboot into recovery (very important!)
flash SuperSU or whatever
reboot system

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

Need to flash TWRP which will remain after reboot...

Hi All,
I am on MIUI 11.0.1 rom and have unlocked bootloader and have got Root as well. I had flashed twrp-3.3.1-2-raphael-mauronofrio recovery initially but I found that it doesn't persist after reboot and stock recovery appears. How can I make it permanent recovery option and when OTA update comes, will it wipe the TWRP recovery as well?
Also, now I have stock recovery with root and if I flash the TWRP again, do I need to format data again? I have installed all the apps and copied data in phone and dont want to lose again..
Please help.. Thanks in advance!

You shoulf flash magisk after recovery

Thanks for the reply.. I did flash magisk after flashing TWRP to root the phone.. But now my recovery is Stock..

Cant enter TWRP

I am trying to root my nubianred magic 3 global. I already flash the twrp to flash magisk but everytime i go to recovery mode it is always the stock recobery not the twrp. I followed the instruction below and the result is OK. How can i reboot to twrp recovery? Any idea?

Unable to install TWRP

Hello guys.
I have a problem trying to install custom recovery on my phone. I tried the fastboot method ( fastboot flash recovery twrp.img ) it does install the twrp but after reboot the official recovery it's back.
The problem is that is not the first time I try to install, before I succeeded because I had the startup page of twrp with that slide. Now no matter what twrp I try to install it boots in twrp and after reboot stock comes back.
I tried even those scripts which are installing automatically the recovery but without success.
Any thoughts?
Many thanks

romica said:
Hello guys.
I have a problem trying to install custom recovery on my phone. I tried the fastboot method ( fastboot flash recovery twrp.img ) it does install the twrp but after reboot the official recovery it's back.
The problem is that is not the first time I try to install, before I succeeded because I had the startup page of twrp with that slide. Now no matter what twrp I try to install it boots in twrp and after reboot stock comes back.
I tried even those scripts which are installing automatically the recovery but without success.
Any thoughts?
Many thanks
Click to expand...
Click to collapse
i have same issue. I use miui 11 android 9.

You have to flash magisk or other rom.