Gefen EXT-HD-DSMP - Manual (Page 60)

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FIRMWARE UPDATE
5. The following set of screens will be displayed as the update process
is taking place:
6. After the update process has completed successfully, the following screen
will be displayed. The Hi-Def Digital Signage Media Player will then return to
the Input PIN Code screen.
WARNING: Do not disconnect power or remove the USB drive
during the firmware update process. Doing so may cause the unit to
function improperly or lock up in an unrecoverable state.