issue SyntaxError with "got[ERASED] expected..."

So I think you've got a few issues...

-> Bluetooth gets printed all the time when connecting to Bluetooth, but normally it's hidden by the 'Debug' menu option in settings.

Got [ERASED] expected happens either when you've deleted file that you're currently executing code out of, or somehow the file has got corrupted.

I reckon in your case maybe what happened is you were uploading/updating (probably the bootloader?) and the connection broke for some reason halfway through the update, so you ended up with only half a file in memory.

You could try just disconnecting from Gadgetbridge, reconnecting to the app loader and making sure you re-upload 'bootloader' and see if that fixes it?