How To Flash A VU+ DUO Linux Enigma2 Receiver
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Flashing the Receiver:
Fully power the receiver down via the rocker switch at the rear of the receiver.
Make sure no USB devices are plugged into the receiver at this point.
Insert the USB stick containing the image files into one of the USB ports on the receiver.
Power the receiver on from the rear rocker switch and await instructions.
As your Duo starts to power up the flash progress should automatically begin with a readout of the progress on the receivers display, just sit tight and wait for the receiver to do it's thing.