on the 5200D usb you load the softcam.key onto a usb stick,insert the stick into the usb port, select menu from the remote choose usb if it asks for password 0 0 0 0 then just select the key off the usb stick and press ok then you will see it update.
yes it is the same procedure as 5200D.
if you have the latest patch from 22/08/08 these are the specs for the patch.
Updated TPS.bin
DigiTV AU
Polsat AU
Premiere AU
Absat,
ORF, etc
For Premiere Portal channels (Premiere Direkt, Premiere Sport Portal & Erotik AB), press Bookmark button
To Download software/keys/channel list by USB: Menu - USB - Data Transfer (takes 10secs for software!)