Technisat DiGYBOXX T4

- Copy the "image.sig" to a FAT32-formatted usb-stick
- Put the stick in the box and power-cycle
- The box will find the software, and will display USbU on the front display
- When the software-update has finished flashing, dOnE is displayed on front display.
- At this point, remove the stick, and restart the box.

