Firmware recovery procedure
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Chapter 10
Firmware recovery
procedure
Chapter 10
Copy a firmware DFF file into “dune_firmware.dff” file at the top level of a USB flash
drive (preferably use exactly the same firmware version as was attempted to install
during the failed upgrade).
Switch the player off (using the power button on the player).
Attach the USB flash drive with “dune_firmware.dff” file to the player.
Switch the player on.
The player should detect the the USB flash drive and automatically start firmware
recovery procedure. You should see “RECOVER”, “CHK 0”, “CHK 1”,..., “CHK 99”,
“REC 0”, “REC 1”, ..., “REC 99”, “OK”, “EJECT STORAGE AND REBOOT” messages
on the front panel of the player.
On an error, a message “ERR ...” is displayed on the front penal of the player. “...” is
the error code. Possible error codes:
“ERR Ann”, “ERR Bnn”, “ERR Cnn”: A problem with the “dune_firmware.dff”
● the file is invalid/broken
● the file corresponds to a wrong player model
● the file can not be read from the USB drive, etc.
“ERR Dnn”, “ERR Enn”: A problem during data copying (e.g. the USB drive discon-
nected during data copying).
Detach the USB flash drive from the player, and delete the “dune_firmware.dff” file
from it (do not attach the USB flash drive with this file to the player when you switch
the player on, otherwise, the player will attempt to recover the firmware again).
Switch the player off (using the power button on the player).
Switch the player on.
The recovered firmware should load in the usual way.
In a case of firmware upgrade crashed (e.g. the player is switched off dur-
ing firmware upgrade), firmware recovery is possible in most cases (except
the case when the new firmware version has a modified “kernel” part and
the upgrade crashes exactly when rewriting this “kernel” part (first 15% of
upgrade progress).
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