Originally Posted by playya
my friend its all up in twrp thread and a few places about this issue. resort back to an older version of twrp and restore your nandroid since there seems to be a bug with the new twrp and PA or I am sure someone in the PA thread or TWRP may have come up with an answer by now
I checked the twrp thread before, I'm embarrased I didn't saw the post where "cb474" explained the steps to recover the baseband.
It seems trying to wipe data erases the baseband. So for future reference (after twrp fixes it) you need to roll back to 2.5 or 2.6 twrp, flash bootloader and radio again, factory reset, and your rom w/gapps.