The most common reasons an update is unsuccessful are:
- The downloaded update file has not been extracted (unzipped).
- A folder was transferred to the USB memory and the M-300.PRG update file itself.
- The M-300.PRG update file was not place in the root directory of the USB memory.
The following article guides through correctly extracting and placing the file into the root directory:
https://www.rolandus.com/proav/knowledge_base/115004850666
If the problem continues:
- Try formatting the USB memory prior to updating the console:
https://www.rolandus.com/proav/knowledge_base/115004850726 - Perform a speed test for the USB memory to be sure that it's functioning properly with the M-300:
Press SETUP --> F6 (USB MEMORY) --> F7 (SPEED TEST). - Try a different compatible USB memory:
https://www.rolandus.com/proav/knowledge_base/20689765