the superbug in latest firmware allows to use 1.0.2 firmware for software unlock
Get nor, iunlock, 1.0.2 IFS Gls file, bbupdater and perform unlock.
This will patch something on newbaseband responsible for incorrct sim error
Upon successful attempt the signal will be back
You have to be on 1.0.2
The patching is not permanent as on booting or removing the sim it reverts to normal
All 1.1.3 updated phones with new baseband has this protection mechanis
Use at your own risk