Problem with a V7 Non-Gap,and messiah2

[Mikka01]

Hello.
I've installed 15 messiah 2 on V5,V4 and V7 consoles,without problems.But today,I've installed it on a V7 Non-Gap bios.This console,with the chip installed,doesn't work (black screen after to turn the power on) and cd tray doesn't open.(blue led off,too)
I've tested all bios and CD/DVD controller points,with no results.
If I uninstall the chip,the console works perfectly.I have installed this chip on another V7 (gap bios) and it works OK.I've reinstalled on Non-gap,and another time the same problem.
I think the problem is with the console (ref.39004,Non-gap bios,PAL).
Do you know if exists a new version (7.1 or 8) that doens't accept the messiah2?
Please,help me,if you can!
Thank you very much !!!!!!

[charlie_ps2]

Please provide the following information so we can check:

GH-0xx number on the motherboard
All the writing on the BIOS chip

Thanks

[Mikka01]

The GH number is GH-019,and all the writing in the bios:
2002 SCEI
D 221 060 048
B20080 2275M08
Thanks

[charlie_ps2]

This looks like a 7.1 if I can put it that way - jusdging by the BIOS info. I'll see what the man says.

[Mikka01]

Thanks for your help.
I don't have information about this version.I know only V7.

Thanks.