Troubleshooting Reinstall Duo

Location of the FEL button on the MOD Duo

Different MOD Duo models
LEFT: older model with nand flash; RIGHT: newer model with eMMC

Troubleshooting section dedicated to the reinstall the MOD Duo software.

Please note that there are 2 different kinds of MOD Duo units - older ones with nand flash and newer ones with eMMC.
The new unit models have "MOD Duo" written and engraved above the right display.

MOD Duo Factory Reset

For a factory reset using Windows, see Troubleshooting Reinstall via LiveSuit. (applies only to older MOD Duo units with nand flash)

For a factory reset using Linux or macOS see Troubleshooting Reinstall via CommandLine.

A note on different models and old kernel

Since version 1.10, we changed the Linux kernel used by the Duo, but this update does not happen automatically to older units with nand flash.
You can check which kernel version you are running by looking at the "System information" in the Web GUI advanced settings.
Kernel release 3.4.104-rt139-modduo is the older one, while anything above 5.4 is the new and good.
The new kernel offers better performance and reliability, so you are still using the old one please do a factory reset to get the new one!