LS992 unlock problem

Hi
I have problem with sprint unlock

Mode: Emergency
Model: LS992
Elapsed: 3 secs. –> (v9.25)

Phone mode is DOWNLOAD
Start unlock Sprint…
Model name: LGLS992
Software verion: LS992ZV3
Android verion: 6.0.1
IMEI: 35*********26
Backup carrier… done
Laf flash ext4 error: [ChmodChown] could not find root inode.
Error change rights for /cust…
Laf flash ext4 error: [ChmodChown] could not find root inode.
Error change rights for /omadm…
Unlock done!
Elapsed: 7 secs. –> (v9.25)

Tried flash firmware, factory reset still the same
Another one with the same version ZV3 unlock ok

BR Tomi