Checking the recovery logs there was a bogus directory structure (?) under the /userdata/user-data/phablet/.cache/com.ubuntu.gallery/ what messed up the flashing.
Removing that directory made the flashing work.
Still the falsher should not just fail silently.
Checking the recovery logs there was a bogus directory structure (?) under the /userdata/ user-data/ phablet/ .cache/ com.ubuntu. gallery/ what messed up the flashing.
Removing that directory made the flashing work.
Still the falsher should not just fail silently.