Detailed guides for the ViewSonic M1 and ViewSonic M1+ explain that you may also need a second file (like M1_WW.bin ) on the drive for it to work.
The mstarupgrade.bin file is the signature firmware package used by televisions and media players powered by chipsets designed by (now part of MediaTek). MStar chips are popular in affordable, smart, and Android-based televisions because of their solid performance-to-cost ratio. mstarupgrade.bin
Look for the (usually printed on the green board inside, e.g., MSD3663, T.MS3663, TP.MS368). 2. Prepare the USB Drive Use a USB drive with a capacity of 4GB, 8GB, or 16GB. Format the drive to FAT32 on a PC. Detailed guides for the ViewSonic M1 and ViewSonic
Use the device's system settings menu to select "USB Update". Look for the (usually printed on the green board inside, e
In some cases, advanced users use modified mstarupgrade.bin files to change region settings or roll back to an older firmware.