@fdroidorg Thank you. Other platforms updated #Syncthing automatically, so i was kinda expecting it on Android too. But i see now it's manual upgrade: https://github.com/Catfriend1/syncthing-android/blob/main/wiki/Important-News.md
I can understand it. The export config - uninstall - install new - import config avoids migration issues. Now main phone is upgraded, backup phone and tablet next..