Atmega Rom 10 card Rev-A16 unlock

[silkchild]

Hi Guys I reprogrammed a few peoples cards for them that were from receivers brought from a Virgin engineer originally,Their boxes all had These Atmega funcards in,And I tried and failed to unlock them.Luckily the engineer wrote all the important numbers on the bottom of each receiver! I had some Rom 11 cards spare and Gave them all a new card,because they are so much nicer to work with.Anyways now I have about 6 spare Atmega rom 10 cards!

I have tried win explorer using Mikedata script,and sidewinder no joys as of yet. Shall I just keep going? Will they eventually pop like a rom 10? I have also tried the standard backdoor passwords in nagraedit,None worked.I can bin them but feel they would be good for spares they all do work just the nagradate has expired.I have done some searching on here and google searches,People mentioning something called "Jeepers" ? This right? Any good?

Thanks for any help I receive in advance I'm lost