Netgear 779s says unlocked successful but won't work ATT sim

[forrest35]

Hello, I purchased 10 credits to unlock my netgear 779s, it says the unlock was successful but when I put the ATT sim in it says the sim is not valid and will not work with the box? Any help? Thanks


\Found modem : AC779S
Model : Netgear AirCard 779S
IMEI : 356733060477912
Serial NR. : 4C615677032E4
Firmware : NTG9X15A_01.08.02.00
Voice feature : disabled
SIM Lock status : Locked (PH-NET PIN)

Be sure no SIM inserted at unlock process !

================================================== =================

Unlocking, please wait ...

Modem successfully unlocked !

Credits left : 0

[Valdemaras]

Try to detect it again on dc-unlocker while there is no sim inside, it will show correct sim lock status and we move on from there.