This instruction is for Eunhasu upgrade which is not able to upgrade by clicking the upgrade button on the Eunhasu upgrade page.
There are 3 ways to do the upgrade.
First, Samba : It is for Windows file sharing protocol. To access sMS-200 through SMB, type \\eunhasu\mwdata\music in windows file explorer. The sMS-200 should be connected in the same network.
Second, USB memory stick : It is internal debug mode. To use this method for the upgrade, several conditions should be matched.
Finally, imageUSB utility : This is external application to write entire image of the latest version to SD card.
upgrade force