Firmware Update

Firmware update

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.

Update procedure

  • Power off system
  • Insert SD card into JVS Expander
  • Press and hold both A and B button
  • Power on system, MiSTer (not stock DE10 software) needs to run on the DE10 for the Expander to be powered reliably during update.
  • Follow instructions on screen

Instead of powering off/on system, you can also disconnect/reconnect the DC jack on the DE10-nano.


Will be published here when available, and generally announced on Twitter if it’s something major/important.

2024-01-21New USB stack and surrounding code reworked from scratch, update encouraged.
2023-01-19Updated JVS code
Fixes issue with stuck inputs when operating in Gamepad mode

Last Updated on 2024-02-14 by admin