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-200i.PRG update file itself.
- The M-200i.PRG update file was not place in the root directory of the USB memory.
The following article guides through correctly doing these as well as the proper update procedure:
https://proav.roland.com/global/support/knowledge_base/
If the problem continues:
- Try formatting the USB memory prior to updating the console:
https://www.rolandus.com/proav/knowledge_base/218363343 - Be sure to start with USB memory in the M-200i's Memory port and not the WLAN ADAPTOR port.
- Perform a speed test for the USB memory to be sure that it's functioning properly with the M-200i - in the Setup --> USB Memory section.
- Try a different compatible USB memory:
https://www.rolandus.com/proav/knowledge_base/20689765