Probelms with A1230 accelerator (memtest etc.)

[bx19rd]

 Hi, I recently baught a Viper 1230 accelerator and am having a few little problems with it, which I think are down to a bad simm, so here goes.

 I cannot get the Viper to work with a known 4Mb simm in it regardless of jumper settings etc. so I put this down to a bunch of incompatible simms, the 8Mb simm out of the Viper fails the memtest in a Amitek ram only board, so I baught another 8Mb simm which is again known to be working passed memtest in a Pentium 75, but this simm again fails in both boards strangly at the same address $60000 I think it was which is what is leading me to my confusion, surely 2 bad simms cant fail at the same place can they?

The first simm randomly and gradually getting started getting worse I was getting the "Early Statup Board Diagnostic" screen in red telling me the board was defective, with the new simm this no longer happens and the random lockups/resets have gone too.

The system has a CF/SD card and a laptop CDROM on a IDEFIX 97 board, the PSU is a 60W A500 unit that weighs a ton, I have checked the seating of the chips on the A1200 and the connections on the accelerator and all seems firm and nice.

Does anyone have any tips/advice?

Thanks

[bx19rd]

This is the card :

http://www.amiga-hardware.com/showhardware.cgi?HARDID=120

Seems its been rebadged by quite a few companies. I only have a basic A1200 at the moment, I don't have the 3.1 ROMs yet, just the old 3.0 ones.

Thanks for the help, I did not know the firmware needed updating, did not even know it had a firmware :p

[bx19rd]

 The A1200 seems stable enough so far, not quite sure what else I can do now. The simm I think is compatible 60Ns, double sided, none-parity, none-edo, tin contacts, IBM made.
 
 The Amiga is actually usuable now, but I don't want a total random lock up.

 I reinstalled WorkBench 3.0 on a freshly formatted CF card too, not sure if thats helped though, thought it might be worth a shot

Edit :

 Nope now I think its duff, red screened on me while in WorkBench and now won't boot, black screen, and if it does I get the early diag screen screen in a nice red, im so p*ssed its been rock solid stable ALL weekend and the conferance it was meant to be at it tommorow it wont be there now.