Originally Posted by orial10
i did what u told me
i used odin to flash
then it stucked on samsung logo
so i went to the recovery, and i wiped the things
but it didnt helped, it still stucked on the samsung logo..
i noticed some red lines in the recovery that says
"failed to mount /efs(invalid argument"
what is that means?
Means you screwed the efs partition when flashing an incompatible modem with your efs version.
If you flashed a 4.1.2 firmware and got that error, try and flash a mg4 or above modem to see if it gets solved. Or flash a 4.3 firmware altogether.
Read rootSU post on efs, it's a must.
Of you ever backed up your efs or used twrp recovery to make a nandroid backup (which also backs up efs) you might get it back by restoring it.
Otherwise, a patched kernel, modem or ariza patch would be the last available choice before sending to repair.