M1 Firmware Update V203 Upd Jun 2026

Plug the prepared USB drive into the USB port on the projector.

: A system progress bar will climb to 100%. The screen will temporarily go dark as the system resets. Do not interrupt power or pull the USB drive during this 5–10 minute window . Method 2: Over-The-Air (OTA) Network Update

Ensure files are in the root directory and the drive uses FAT32. Outdated device system synchronization. m1 firmware update v203 upd

to ensure your favorite apps and content continue to run smoothly. Addresses performance bugs to maintain a stable system for your movie nights. Before You Begin Check Your Model : This firmware is exclusively for the ViewSonic M1+ . It should be used on the M1, M1+_G2, M1+_V, or M1+-2 models.

Power on your ViewSonic M1+ projector and plug the USB flash drive into the USB-A port. Plug the prepared USB drive into the USB

m1-flash-cli --device /dev/ttyACM0 --firmware M1_v203_UPD.bin --verify --force

The new ADC calibration runs automatically at boot, adding 80 ms to startup. Workaround: Use adc_skip_cal=1 in the boot configuration if you need extreme fast boot. Do not interrupt power or pull the USB

The most reliable way to update the M1+ is using a physical USB drive. Follow these steps to ensure a smooth process: : Use a FAT32 formatted USB drive.

: Connect the AC power cable. Insert the USB drive into the device's USB port while it is powered off, then turn the unit on.

: Plug the prepared USB drive into the standard USB port located on the side panel of the projector.