sebus

Strange, as I seen reports of people stating that they opened .ffu image.... (in the past)

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/deploy-windows-using-full-flash-update--ffu Such created image mounts fine (hence the image is corrfect), but 7-zip cannot open it

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/deploy-windows-using-full-flash-update--ffu Such created image mounts fine, but 7-zip cannot open it

Some additional info here: https://reviews.freebsd.org/D5333

Support uzip FreeBSD Compressed Disk Image

Or in more places "...If I edit the file and change 3584 with 3583, the file plays...

Yes, the file is playable in foobar with dts decoder plugin or with MPC-HC with AC3filter...

So it would be at byte 6 - E00 to DFF ?