I have a vs995/verizon model, on LineageOS 18.1, what do I have to do to get back to stock rom so my phone won't be a paperweight after the holidays? And supplement question: Is there an up to date custom stock rom that will work?
Answering my own question, to save some people a lot of time:
Ovewrite lineage recovery with twrp.
Install LGUP, use Uppercut
Reboot into download mode (hold up button, insert usb)
Write the latest stock rom
Then go back and root your device and install twrp again.