Given recent events in the PH-1 realm, I'm not sure that is a viable option going forward.
I also hope OP keeps the security updates for the OP3/T coming long after the last promised update to Oreo 8.1
I know what you mean - although Rubin did promise no company shut down and promised 2 years of OS and 3 years of security updates - stated this 2 days ago (for what its worth)