M1 Firmware Update V203 Upd Jun 2026

A progress bar will appear; once it reaches 100%, the projector will reboot and return to the Home page. Why Update Firmware?

| Error Message | Likely Cause | Solution | |---------------|---------------|----------| | Rollback blocked (ver < 0x200) | Trying to downgrade | You cannot. Reinstall v203 via DFU. | | Flash verify mismatch at 0x3A4F | Corrupt update file | Re-download from official repo. | | Secure boot sig invalid | Modified firmware | Use only cryptographically signed releases from your vendor. | | Timeout waiting for USB reset | Power instability | Use a powered USB hub or external 5V supply. | m1 firmware update v203 upd

After execution, wait for the Flash successful: 100% message. A progress bar will appear; once it reaches

After reaching 100%, the projector will restart and return to the ViewSonic startup screen. Verify the version in . ⚠️ Important Precautions Reinstall v203 via DFU