The version is on this little guy ... and they need to match on both of your sides.
as you can see, I have 2 "TSS 3 VER. B" which used to work but now I figured that one appears to be dead, not booting when inserted.
If I put the "TSS4 Ver. A", (edit: which is for a SUPER system23...so that might explain things), the game boots fine but is not the same version (A is 1.01 instead of B 1.00(weird I know)).
I went too fast and bought the "PNP 1 Ver. A" , seeing only the "Ver.A" thinking it would fix my issue but it does not even boot with it and now I see that it is for PANIC PARC. (15$ oh well)
Mame has the following information :
- MSPM(FR*) PCB A small plug-in daughterboard that holds FLASHROMs containing Main CPU and Sound CPU programs
TYPE1
MSPM(FRA) PCB 8699017500 (8699017400)
Notes:
J1 - Connector to plug into Main PCB
IC1 \
IC2 / Main Program (Fujitsu 29F016 16MBit FlashROM, TSOP4

IC3 - Sound Program (Fujitsu 29F400T 4MBit FlashROM, TSOP4

Games that use this PCB include...
Game Code and revision
Time Crisis 2 TSS2 Ver.B (for System 23)
Time Crisis 2 TSS3 Ver.B (for System 23)
Gunmen Wars GM1 Ver.A (for Super System 23)
Downhill Bikers DH3 Ver.A (for System 23)
Motocross Go! MG3 Ver.A (for System 23)
Panic Park PNP2 Ver.A (for System 23)
Race On! RO2 Ver.A (for Super System 23)
Type 2:
MSPM(FRA) PCB 8699017501 (8699017401)
Notes:
J1 - Connector to plug into Main PCB
IC1 \
IC2 / Main Program (Fujitsu 29F016 16MBit FlashROM, TSOP4

IC3 - Sound Program (ST M29F400T 4MBit FlashROM, TSOP4

Games that use this PCB include...
Game Code and revision
Angler King AG1 Ver.A (for Super System 23)
GP500 5GP3 Ver.C (for Super System 23)
Time Crisis 2 TSS4 Ver.A (for Super System 23)
Final Furlong 2 FFS1 Ver.? (for Super System 23)
Final Furlong 2 FFS2 Ver.? (for Super System 23)
Type 3:
MSPM(FRC) PCB 8699019800 (8699019700)
Notes:
J1 - Connector to plug into Main PCB
IC1 - Sound Program (Fujitsu 29F400T 4MBit FlashROM, TSOP4

IC3 - a *very tiny* transistor marked 'H5'
IC2 \
IC4 / Main Program (Intel DA28F640J5 64MBit FlashROM, SSOP56)
Games that use this PCB include...
Game Code and revision Notes
Crisis Zone CSZO4 Ver.B Serialsed ROMs, IC2 not populated
Crisis Zone CSZO3 Ver.B Serialsed ROMs, IC2 not populated
Crisis Zone CSZO2 Ver.A Serialsed ROMs, IC2 not populated
So my question : Is it possible to burn/change the versions ? and who can do it

... or who has TSS3 Ver.B or TSS4 Ver.A for sale ?!
Thanks!