Check out this XS Log

[pierreb]

If the FS(the *.fbn file) is corrupted, then you cannot do anything with it. The only option to download a good FS for your phone/region.
So, again, I suggest you to check the FS firmware file with babeckeck, and you will know if there is something wrong with FS or with phone.

Looks like it;s the file

babeck K790_R8BF003_FS_AMERIC_2_RED52.fbn
babecheck [sswcheck] v0.5 by den_po

loading K790_R8BF003_FS_AMERICA_2_RED52.fbn... ok
db2020 cid 52 red
full hash
number of blocks: 217 (0xD9)
error! size of superblock doesn't match a hdr value
1st block addr: 0xFFFFFFFF
1st block size: 0x10000
error! 1st block's hash doesn't match a hdr value

[pierreb]

Can someone point me to the correct working files please? For a K790A
For Canada?

K790_R8BF003_MAIN_GENERIC_EV_RED52.mbn is OK

but

K790_R8BF003_FS_AMERICA_2_RED52.fbn is bad