BladeCoder

Just upgraded my Orange Pi 3B v1. 1 yesterday to the latest 6.12.1 kernel and it didn't boot anymore. Renamed the DTS file in ArmbianEnv.txt to specify the correct version v1.1 and it boots with no network adapter. In kernel log I see: cannot attach to phy (error -19) What are my options? Do I need to downgrade the kernel and how? When I installed this board only the edge kernel was available for it, how can I switch to the stable 6.1.75 without reinstalling everything?