AVT MAGIC DABMUX plus Training page 174

Recovery from SD card (2)
 If updating the bootloader or firmware via the web interface fails, you
can alternatively update the system via an SD card.
 Contact support for the recovery files.
The recovery files are provided as a zip archive.

 Unpack the archive onto an SDHC card.
Turn off the system.

 Insert the SD card into the slot (❶).
 Press the RST button (❷) on the back of the system with a paper clip
for at least 12 seconds.
The system will boot from the SD card.
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