Hi,
I am having trouble restoring a backup of TWRP on my OnePlus 7 Pro. I made a full backup of Oxygen OS 10.0.10 (Android 10) two days ago. I also had Magisk Canary (root) on Android with some modules (Xposed for example). I selected /data, /modem, /system_image, /vendor_image and /boot for the backup. The backup was successful, the checksums match. I also made a backup with the PIN set on the screen, but after entering Recovery TWRP always decrypts the /data partition correctly. The smartphone was fully encrypted.
Yesterday I wanted to restore the full system including data, but I'm still having problems with this. After restoring a backup, there is a continuous bootloop at startup (you can see the logo of the loading Android system), but after a few tens of seconds there is a reboot and so on all the time. I've done full format of smartphone using MsmDownloadTool (I've flashed OxygenOS 10.0.10 with Msm (OxygenOS version as in TWRP backup)).
I've tried to install ROM 10.0.10 right after restoring a backup, but that didn't give me anything. Same with installing TWRP and Magisk after restoring backup - still nothing. I also uninstalled Magisk immediately after making a backup, then uploaded Magisk again and same bootloop.
I noticed that after restoring and formatting the /data partition, the system booted normally but without any data which is important to me.
I would ask for help, maybe someone knows how to fix this, maybe need to attach some log files - write what and how, I will attach everything necessary.