use patched "p" version. then goto the channel ( with biss scrambling)
Move to the hidden menu 8280.
You only have to enter the 1st 16 letter's & numerals if there only 16 duplicated, if there are 32 that do not duplicate the 1st 16 then you will have to enter them all, otherwise with just 16 the other 16 will automatically be entered by your receiver you will find that 2 pairs will change after you enter the keys then go back to view this is a calculation setting & should be ignored just enter the 16 keys in the Biss menu as you see them in the keys section,
When you enter a code in Biss only enter the 16 characters ignore the ident 1F FF
& just enter the 16 or 32 HEX Keys as you see them,
If you get no sound just change channels then go back & it will clear,
The 1st 16 characters are for vision the 2nd 16 are for sound,
Same for DCW/CCW 32 HEX keys