Altering XDV before flashing

[maesitos]

Not necessarily a bug in the driver but does anybody know here if the XDV file has any type of checksum or signature? We need to alter the XDV file to fine tune a firmware we own but if we modify the original XDV, BlueFlash is uploading some type of default data and skipping our XDV altogether. The original XDV works just fine.

I can't find any information for the chip CSR 5 on this regard.

Any help will be appreciated!