flashing Mutant hd51

[john doe]

am in the process of flashing a friends box.

in the guides section I have found the flashing process guide. in the guide it says power off receiver, but theres no rocker switch.

just want to check before flashing.

also how do I setup the tuners for sat, the box has DVB-S/S2/S2X - DVB-C/T/T2 , but can only see Tuner A DVB-T2 & tuner B as the DVB-S2???