[Q] E:failed to mount /efs (Invalid argument)

[MigoMujahid]

That requires buying a box that's more expensive than the phones worth...

Unfortunately you're right, your only solution is to give it to a service center that have the Octoplus so they can repair it for you.

 

[Simauito]

E: failed to mount /efs ( invalid argument)

guys im having the same trouble with my dad's samsung galaxy note 2 GT N71-00
Can somebody help a newbie here and can you help me step by step on how to download this toolkit and how to use this CWM so I can use this phone.. i really really need your help so bad:crying::crying::crying:
any help will be greatly appreciated.. cheers

 

[Aljoscha23]

E:failed to mount efs [nearly solved]

Thanks everyone for putting all the information together.

I followed the following instructions:

1. Flashed CWM recovery via ODIN.
2. Applied fixed permissions in CWM recovery
3. Opened the ADB shell

   adb shell

4. Ran the code

   mke2fs / dev/block/mmcblk0p3

5. The code

   mount-w-t ext4 / dev/block/mmcblk0p3 / efs

   did not work
6. Flashed Stock ROM (N7100DBTFEN1) from Sammobile.
7. Reboot.

The Phone works again but now its showing the same box with systeminformation tcastel mentioned before.

I reflashed CWM recovery and wiped all chache, dalvik, etc. Applied factory reset as well - but without success - box is still there.

Anyone has any other ideas?

 

[Aljoscha23]

The Phone works again but now its showing the same box with systeminformation tcastel mentioned before.

I reflashed CWM recovery and wiped all chache, dalvik, etc. Applied factory reset as well - but without success - box is still there.

Anyone has any other ideas?

I was able to fix the factory mode (using CF-Auto Root and Root Explorer to modify the efs setting).

Unfortunately during all the process the IMEI has been lost. I do only have a generic IMEI starting with 0049 for Germany. Thus the phone is not able to register with the network.

 

[spannernick]

I repaired mine 3 days ago with BST I got it from ebay lucky for £30 cos they go for £99. Fixed my phone in 2 mins.MY Note2 N7100 had generic 0049.. IMEI on it, I live in the UK so if anybody wants theirs fixed PM me and I see what I can do,Of core you have to send your phone to me to fix.If its a EFS IMEI problem than I can fix it.

This is what I did to get my phone working again.. This is not me but I did the same thing with BST..

https://www.youtube.com/watch?v=XfLrUWp7mUQ