[LineageOS Questions & Answers] HoneyXoid:
Hi, I'd like to start off by saying I'm new here, and have went over all the newbie threads as best as I can. I appreciate how welcoming this forum is, I never took that much of a deep look at it besides looking at threads in the past for multiple things. Still very new to all this stuff in general. Due to being stuck rn, I cannot provide a proper signature, apologies.

Couple Days Ago- Unlocked bootloader on my Oneplus 7 Pro using adb, flashed TWRP for the then current version for the 7 Pro Guacamole referenced from the post here, then sideloaded Lineage through TWRP. Started using the device and it seemed to have went well and like a pretty average install as far as I can tell.

Note- I'm not sure if I installed TWRP properly, as I was able to boot into TWRP through power button and volume up, but I remember also accidentally booting into the Lineage Recovery at some point after my phone was already rooted after the next step, but idk honestly. I note this bc I seen that there might be another step to permanently install twrp once inside after flashing, but not sure, apologies. My lack of knowledge feels inexcusable with how abundant it is here.

I rooted the device soon after with magisk, which I installed the zip (which was simply placed in main directory) through TWRP, then finished the install in the OS and that seemed to be good. Mention I didn't actually know that the device was rooted after the first time, dumb ik, but I did this maybe 3 times before realizing that the device was indeed already rooted and I did it extra times.

Today I got the notification for a Lineage OS update in the OS. Because I know it's coming, yeah, ik how stupid this was to not make backups beforehand as I already have a good bit on there I don't wish to lose, although I have MEGA for all my super important stuff like my password database, etc. Needless to say, I have learned my lesson. Nonetheless, I downloaded the update and pressed the install button. It said installed and would need a reboot, so I did. Then it got stuck in the boot animation for 1.5+ hours.

Force shutting it off and into fastboot, I could boot into the updated lineage recovery, but no TWRP. I have tried reflashing the previous version of the lineage recovery and it did not make a difference. I also tried flashing the next newest version of TWRP for the 7 Pro running guacamole, but then I couldn't get any further than the bootloader.

I ended up reflashing the up to date version of the lineage recovery and it sat doing nothing for a while, so it's off now. I presume that Nebrassy and other devs for TWRP are working on a version for the new update, but idk how long that takes, not complaining though. (mad respect for all who make lineage, twrp and all this possible) (not to mention I don't even know the root of the problem)

Any thoughts or help would be much appreciated, and feel free to ask questions. I would preferably not have to wipe it all and restart, so I'm looking for solutions, although I'm willing to accept this might be for nothing and take the L. Lastly sorry if I have done anything "wrong" in this thread, lmk if I can do anything better, I appreciate it.