It's not an issue the checksum into Module name . . .
FE3542FE-C1D3-4EF8-657C-8048606FF670_676.ROM is your and
FE3542FE-C1D3-4EF8-657C-8048606FF670_670.ROM is mine and They are the same !!!
All after underscore is PMT259 interla use to identify Modules and Andy used a Checksum
It will change on every pc or configuration, so doesn't matter !
Just look for the right offsets !
It's only a counting question :
If Starting Offset String is e.g. 0x00100 and our byte to change is 5 bytes after It
We will get 0x00100 + 0x05 = 0x00105 !!!
In this case :
0xFBEA Variable 0xA[1] equals value in list (0x0, 0x1) {14 0B 0A 00 01 02 00 FF 00 FE 00}
the String is {14 0B 0A 00 01 02 00 FF 00 FE 00} and the bytes to change are at 7 and 9
14 0B 0A 00 01 02 00 FF 00 FE 00
00 01 02 03 04 05 06 07 08 09 0A = Offset Position in hex notation
So You have to count . . . first is 0xFBEA = 00 position then
0xFBEA EB EC ED EE EF F0 F1 F2 F3 F4 You get 0xFBF2 and 0xFBF4 address offsets
0xFBEA 00 01 02 03 04 05 06 07 08 09 Position
0xFBEA 14 0B 0A 00 01 02 00 FF 00 FE String
I don't know to do better
Regards