After the reboot, navigate to your "System Information" or "About" tab to confirm that the firmware version now reads v2.03 . Troubleshooting Common Issues

: If your unit has a serial number starting with "W5Y," you may need to use the M1+ OTA tool within the AppsCenter for updates instead of the manual USB method.

Which are you attempting to update to version 2.03? How to Upgrade the M1+ Firmware? - Projector - ViewSonic

: Sony features a Mac system software update helper for Apple Silicon (M1) computers to execute firmware v2.03. Fujifilm X-T100 Camera