MV1-FZ SLOT 1 Settings problem

My neo-geo MV1-FZ have a strange problem.Look at these pictures:

http://picbg.net/img.php?file=25f75b508275e10c.jpg
http://picbg.net/img.php?file=aa82abc6c5466cc0.jpg
http://picbg.net/img.php?file=c6986e7a75a3b8ce.jpg
http://picbg.net/img.php?file=1fb7dded7c8a0da0.jpg

So ,the problem is that the menu of SLOT 1 is corrupted.When I try to change the values the settings comes up,but when I just go back and enter again SLOT 1 settings,they are not saved,and again they are corrupted.But I can save the callendar settings.
In the game when I try to insert 1 credit,somethting go wild-the credit is not 1,but many,like the microswitch who is connected to Coin Switcher of JAMMA is pushed continously.
No sound problems,no graphic gluthes/bugs.It's play normaly,but with these problems I cannot set nothing of SLOT 1-like lives,difficulty and etc.

I clean very well the JAMMA connector,the slots that are connecting to the Motherboard,try with diifferent SLOT1(from other neo-geo board),try with other BIOS,look for broken pins or bad solders,try with other cartridges-nothing change the problem

You probably have a corrupted header in the backup. You need a unibios to fix it.

And how this can be fix with Unibios?

It corrects the header. Make sure your backup battery is charged so it saves the fix, if you have any problems with your backup ram not getting power then it won't keep the new header.

Thank you.So I neeed to buy EPROM 27c1024,but here in Bulgaria is realy hard to find.I have a couple of 27c2048 and 27c4096.Can I use them.Can you tell me for equivalent of 27c1024,I think 27c210 is

Yes, 27C210.