Hi, nice rom but I'm stuck with the phone dialler, trying to call and nothing comes on the screen, you can hear the call going on in the back ground but there is no GUI, to end, mute, hold etc. Have to reboot the phone to end the call. Tried clearing cache on default dialler and other phone apps from the store. Same. I'm thinking it's a gapps issue. Using orange fox only one I could get to load without errors was the macro version of nikgapps.
The gapps in the OP told me I didn't have a compatible phone they were the android 11 test ones and of course this is a android 11 ROM so not sure what's going on there.
The only difference between clean flash as above and upgrading is you just wipe system & cache, leaving data. Everything else is the same. ***Remember to always clean flash before reporting problems. Clean flashing is always the best method of ROM install.