unlock codes for STB's

[baz-r]

a quick question i have been unlocking dvd players for a few of my friends.
main them play any region dvd and ulocking other features as well by looking up codes on the net.
as thay make them all the same and tern featurs on and off trough secret menus
any one know know if you can get thease for set top boxes?
espichaliy for the sagam ones as i know alot of thease are very simlar!