The firmware can be updated using a standard Micro SD card. The card must be formatted with a FAT file system. It is not possible to 'brick' or damage the unit during firmware update, if you experience an error - simply try again.
Download zip file below, and extract file to root of sd card.
- Power off system
- Insert SD card into Jammafier
- Press and hold both A and B button
- Power on system
- Follow instructions on screen
Instead of powering off/on system, you can also disconnect/reconnect the micro USB cable on the DE10-nano.
Will be published here when available, and generally announced on Twitter if it's something major/important.