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[Q] I forgot to backup EFS... and now IMEI null/null

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Exclamation [Q] I forgot to backup EFS... and now IMEI null/null

Hi there I have a Galaxy S III I9300 ( International) , I just install the room:

"[ROM][ALLNEW][NA7]Revolutionary S5(SmartDroid) Galaxy S5 Themed[FAST][STABLE] - xda-developers DevDB"

but when I done from installing , I forgot to backup the EFS file.... and I don't have any previously backup from it....

but I remember when I install it a massege appeared saying " backing up EFS..."

where did I should find it and what to do.....

and now there is no IMEI " null/null"...

what to do.... help me>>>
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Go read the sticky thread in general forum on efs

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