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EFS backup

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swapk007
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Default EFS backup

What is the use of EFS backup?



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Soryuu
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The EFS holds your IMEI and other baseband-related stuff which essentially allows you to conncet to mobile networks. So if you lose your IMEI/your EFS becomes corrupt you'll find that your mobile reception won't work.

So it becomes pretty important to have a backup of it somewhere in case things go wrong (if you don't its not hard to fix, just bothersome)

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swapk007
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How i can use this backup after installing custom rom


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tetakpatak
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Originally Posted by swapk007 View Post
How i can use this backup after installing custom rom
It would more wise to backup EFS before flashing a custom ROM.

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swapk007
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Will custom rom change the values inside the efs folder if yes is it possible that we can retain the original efs values by using earlier backed efa folder


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tetakpatak
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Will custom rom change the values inside the efs folder if yes is it possible that we can retain the original efs values by using earlier backed efa folder
1. no
2. if the folder is created as image it is easier. Copy and paste often won't work.

Upgrading stepwise is the safest way to keep all fine (GB, ICS, JB/CM10.2, KK). Upgrading to 4.3/CM10.2 will resize the partitions so best way to downgrade again beyond 4.3 is to flash stock GB with PIT file and repartition with Odin.

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