Sorry, my Italian is not that good to follow completely the linked thread.

But, if you already flashed again (hopefully in right oder: first vanilla, then combined?), it looks like a HW problem. Sorry.

fmtxd is working perfecly over here. [pr1.3(.1), no cssu, boosted fmtxd (but also stock is working).

The only possible suggestion I have for you, is:
shut down
pull battery
wait 30 seconds
push power button for >3 seconds
insert battery
boot
and test it again.
(I know it sounds weird but I had once similar problem and that was the only help!)