(1) Switch on a FTA channel, Go to 'menu' in your receiver
(2) go to CA
(3) At MR 106 (or whatever your version is),press OK and go to 'set up', then 'edit cas keys', then (for example, if you wanted to update D+) 'nagravision', then'4101' then '00 or 01' which you need to edit
(4) OK on the line of code , three boxes will come up, enter each group of 3 dec numbers.
After 8 sets of 3 itwill say 'save', press 'ok' for each key you need to save,then 'exit' menu. Good luck!