Updated security info for 721....

[rolou21]

Fwiw noticed on the 721 sys info screen they have updated the card revision from REV A20 TO A21 if anyone cares.........

[Darkman]

I think that has nothing to do with your 721,
rather - I think it directly has to do with with the card...
I would take a guess they updated internal revision of the card
(i guess in your case from a20 to a21...in most cases it has to do with a Anti-Hacking protection of the card or other "internal" reasons of Dishnetwork, etc)