I9506 lost signal after unlock and update software from 4.2.2 to 4.3

[wahidsam]

Originally Posted by denard

I have the same problem with mine but 4.3 no network or low network before and after i unlock.try 03 different Card Sim but no network.when search for network,display but can't register on network. what the solution? i want to relock the phone and return it like that to customer but how to do? i write backup nvm but it don't relock the phone.

Solution for repaire No Network after unlock is here...

http://forum.gsmhosting.com/vbb/10541182-post35.html

[kjava]

i9506 can we use cert i9505 or i9500 instead sir blang

[blang]

Originally Posted by kjava

i9506 can we use cert i9505 or i9500 instead sir blang

you see any button related to QCN when you choise i9500?
stupid question.
before ask something check in sw, stop waster forum space and time.

[wicemm]

Originally Posted by blang

Please switch phone to flash mode, backup file choise like pda, after this phone will be locked in original fresh status.

After this please read nvm and nvm full, attach here, i will creat for you network fix nvm using your phone nvm.

Waiting for nvm.

Please can u explain more. i m new and i have i9506 unlocked by zx3 but network prob. i want to relock it and than reunlock it by official key

[blang]

Originally Posted by wicemm

Please can u explain more. i m new and i have i9506 unlocked by zx3 but network prob. i want to relock it and than reunlock it by official key

In backup folder sw automatic creating full efs backup *.tar.
If you flash this file in to phone like pda you will have phone in original status.

After this read qcn, unlock phone and write qcn back, phone will be unlocked and with network.

Try just wrtie qcn file attached in previous posts and see result.