A. |
The upgrade.img and upgrade.md5 files must be in a folder named “upgrade” (the folder name is not case sensitive) on the SD card or the projector will display the “The upgrade patch is not found in the SD card!” error. When you download the software from the 3M website, you are downloading a zip file. Within the zip file, you will find two files named upgrade.img and upgrade.md5. Place these two files into the "upgrade" folder on the microSD card. |