As I already explained privately:
1) VIN B293747 needs to match CCC and the FSC Code, and the Car itself. Without a 3-Way match, it won't work.
2) There are VERY FEW people that know how to use Tool32 to Import and Activate FSC Codes. I am NOT one of them.
I do know that with 00SWT.prg, these are the jobs, but I do not know the arguments.
FREISCHALTCODE_PRUEFEN FSC check
FREISCHALTCODE_LAENGE_LESEN FSC long read
FREISCHALTCODE_SCHREIBEN FSC write you can use the 64bit FSC long word from the .FSC with this one.
I think also for FREISCHALTCODE_SCHREIBEN, first you have to do an authentication somehow with jobs "authentifizierung_zufallszahl_lesen" and "authentifizierung_starten".
3) Other people use a program called FSTool (Freischalt-Tool), not to be confused with FSCTools, which is an entirely different program that does not do do Import and Activation. You will likely never get your hands on FSTool (Freischalt-Tool), as the few people who have it, will NOT share it.
4) The FSC B293747.ZIP contains no actual FSC Code. The B293747_00020001.der file is only a certificate for the FSC Code, which you do not need. The FSC Code file name would be B293747_00020001.FSC. I think the B293747_00020001.xml file is the BASE64 FSC Code embedded in a XML File. Maybe this can be converted to the .FSC file, but I do not know how.
The other option is to use ISAT/P. Have you considered that?