[Q] Need help: Stuck on boot after trying to flash OOS 5.1.3

[elitemeat]

I tried to update to the newest version of OxygenOS but I'm now stuck on boot circle animation and not sure what to do.

I was initially on OOS 4.5.10

Here is what I did to try to update:

1. Downloaded OOS 5.1.3 from Oneplus website and also downloaded Magisk v16
2. Downloaded TWRP twrp-3.2.1-1-cheeseburger.img and then flashed to my phone.
3. Rebooted back into TWRP, then flashed the OOS 5.1.3 .zip file. Immediately after that, I flashed the Magisk .zip.
4. I then rebooted. I'm now stuck at boot.

I am now able to access TWRP. I wanted to try and restore using a Nandroid I made, but all my files appear as gibberish. I'm assuming this is an encryption issue?

What are steps I can take to fix this?

Edit: Figured it out.

 

[deep0d0]

Boot using BLU Spark recovery, or any other Oreo compatible recovery. Official twrp seems to have some issues now and then

 

[elitemeat]

deleted

 

[elitemeat]

Boot using BLU Spark recovery, or any other Oreo compatible recovery. Official twrp seems to have some issues now and then

Could you tell me the exact steps to take from where I am now? I don't want to break anything else.

Edit: Figured it out.

 

[Naved.]

I tried to update to the newest version of OxygenOS but I'm now stuck on boot circle animation and not sure what to do.

I was initially on OOS 4.5.10

Here is what I did to try to update:

1. Downloaded OOS 5.1.3 from Oneplus website and also downloaded Magisk v16
2. Downloaded TWRP twrp-3.2.1-1-cheeseburger.img and then flashed to my phone.
3. Rebooted back into TWRP, then flashed the OOS 5.1.3 .zip file. Immediately after that, I flashed the Magisk .zip.
4. I then rebooted. I'm now stuck at boot.

I am now able to access TWRP. I wanted to try and restore using a Nandroid I made, but all my files appear as gibberish. I'm assuming this is an encryption issue?

What are steps I can take to fix this?

Edit: Figured it out.

1) First download twrp recovery from codeworkx (Make sure you have the latest one)
https://forum.xda-developers.com/on...overy-twrp-3-2-1-0-oreo-oxygenos-5-0-t3725723
2) Boot to fastboot and flash the recovery.
3) Flash the rom zip file.
4) Flash magisk zip file.
5) Restart your phone.
##Note: If you want to flash the recovery file you can do that using twrp itself or using fastboot but what I've found that some apps (banking apps) don't work after replacing recovery.