Please suggest somewhere else I should post this. I took an OTA update last night for Lineage4microG and my OnePlus8T just bootlooped. I tried downloading and manually side loading both the most recent and previous versions, but they keep failing with a kInstallDeviceOpenError. I am desperate to get back into my device without wiping the data.
If your phone has a password on it then its data is going to be encrypted until you unlock the phone.
You can temporarily boot a twrp recovery image. It will let you put in your password and decrypt your storage.
You should be able to transfer the files to your PC with a cable then
I couldn’t get twrp to boot :( Any twrp images for my phone are a few years old