Did you try to insert this card in another OGO to see what happens ? Maybe
the problem cold not be your card !
I think that the last thing that you could try could be put your card in
short circuit. You must to know what pin is the "power +" and what is the
"ground". After this you just need to put this two pins in contact and
Bumbaaaaa, you can have your SRAM card back again.
Be carefull because doing like this you will sure lose all your stored data.
Janc Aguiar Lage