Hello Zvika,
The vendor's bin file starts with the following pattern:
00000000: FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF 00000010: 5AA5F00F 03000402 0602100B 20002100
Can you confirm that this is the start of IFD ?
The magic "5A A5 F0 0F" at offset 0x10 indicates the start of the IFD.
Regards,
Angel Pons