If it was a SMH update, then this would be the procedure
- try to flash incompatible version -> enter Safe Mode
- Safe Mode Healer kicks in and downloads/flashes system part 1 and restarts
- downloads/flashes part2 and restarts
3.a) if this was a three part system (e.g. as Electron) same for part 3 - re-try flashing app from step 1 -> restart
If everything worked fine (and wasn’t interrupted by user ;-)) you should now have an updated system version and your intended application on the device.