[Q] EFS Backup - Samsung Galaxy Mega

I am trying (as recommended) to make an EFS backup of my phone.
I have tried EFS Backup Pro but the version of busybox I have (the one from Play Google: 1.21.0) seem to have an applet missing: readlink.
They ask to downgrade to version 1.20.2 but so far I could not find the APK to do that
How can I downgrade busybox ?
I have also tried the tuto for the GS3 i9305 using QPST but when I dial *#7284# I don't get the Menu "Phone util" so I assume this procedure doesn't work for the Galaxy mega ?
Has anybody managed to save the EFS on the mega ??? If yes how ??
Thanks in advance.

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Tilagoon said:
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Has anybody managed to save the EFS on the mega ??? If yes how ??
Click to expand...
Click to collapse
For this we must have root:
I have already a backup efs.img from i9205 made like this THREAD but changed the partition efs to 10 (see the screenshot). This command:
dd if=/dev/block/mmcblk0p10 of=/storage/extSdCard/efs.img bs=4096
If I have some efs issue I will try the restore of it. (I'm not sure if this work. Take care, the responsibility is Your's)
PS: For i9200 You must see if the partition efs is the 10 also.
,

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Ok, thanks for your fast answer.
My phone is also a I9205, so I'll try.Anyway there is no risk as long as we don't restore the backup.

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Dont know if this will work but if you have root, install root explorer and just copy your efs folder to an ext SD card?
or am i thinking too simple about this?

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SquirtingCherry said:
Dont know if this will work but if you have root, install root explorer and just copy your efs folder to an ext SD card?
or am i thinking too simple about this?
Click to expand...
Click to collapse
Yes, I confirm this work. I restored the efs twice whit Root Explorer on Galaxy Tab 7" P1000 and one on Note 10.1 N8000.
But we must verify the permissions, I compared whit another device. Can be some issues whit.

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I had a look with root explorer and there is nothing after the permissions (rwxrwx) , no -> and no file name.
This is valid for all the directories in the root directories.
By the way the name I don't have the same directories as you ??
How did you get that ? Which file explorer ??

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Root Explorer, now 2.21.1 version from Speed Software. On top we must put on R/W to see or change permissions.
For exemple: long touch on efs folder, on next window we have permissions. Touch on permissions, we see it on a new little window.
We can verify, change... or ok/cancel.

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I am using Root explorer 3.and this is what I can see:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Doesn' really look like what you get !!
PS: Sorry but I did find yet how to put a miniature un the post

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Tilagoon said:
I am using Root explorer 3.and this is what I can see:
................................................
Doesn' really look like what you get !!
PS: Sorry but I did find yet how to put a miniature un the post
Click to expand...
Click to collapse
Good, is the new version 3 and You are already on r/w. Now make this:
Long touch on efs folder until you have a new window whit many options (attach1), also permissions (Permissões in Portuguese).
Touch on permissions, we see it on a new little window (attach2). This mean rwxrwx--x = 7,7,1 (my case).
Your is rwxrwxrwx = 7,7,7
(r=Leitura, w=Gravação, x=Executar)
We can verify, change... or ok/cancel.
See attachs:
PS: On version 3 You can mark efs at right and touch on menu. Is same.
Valente

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Yes, I have done that already and changed the last part of the permission to rwx (was--x) as you can see in may capture.
But still no indication like yours: -> mmcblk0p10 !!
And as you can see also my root directory is different from yours????

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Tilagoon said:
And as you can see also my root directory is different from yours????
Click to expand...
Click to collapse
Because I prefer the Root Explorer old version 2.21.1 and invalidate the update of it on Play Store.
Updated now to vers 3 to test to You but I returned to old version. I like it more.

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Ok, I'll try with the same version as yours and see what I get.
But my concern was that the name of the directories in my capture and yours are quite different and I don't think that the other version of Root explorer wil change anything.

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I have installed version 2.21.1 and I get the same thing !
But I think I have finally understood what's going on: your first capture is not the capture of the Root directory as what we see are not sub-directories but files !!
Can you tell me the path to get that ??

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Tilagoon said:
I have installed version 2.21.1 and I get the same thing !
But I think I have finally understood what's going on: your first capture is not the capture of the Root directory as what we see are not sub-directories but files !!
Can you tell me the path to get that ??
Click to expand...
Click to collapse
Like I wrote. Long touch on efs folder, You have like my first screenshot whit options (Opções in Portuguese).

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ValenteL said:
Like I wrote. Long touch on efs folder, You have like my first screenshot whit options (Opções in Portuguese).
Click to expand...
Click to collapse
I must be stupid but I can' get what I want which is show in the attachment below.
I have all the steps: mount R/W, long touch on EFS, then I get the options menu and if I go in permissions I can change them but when I say OK I return to the contents of the root directory.
I have tried to change the permissions but no way. I really don't see what more can be done to get this information.
I think I'll give up and will no longer bother you.
Any way thank you very much for your help and having be so patient.

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Tilagoon said:
I must be stupid but I can' get what I want which is show in the attachment below.
I have all the steps: mount R/W, long touch on EFS, then I get the options menu and if I go in permissions I can change them but when I say OK I return to the contents of the root directory.
I have tried to change the permissions but no way. I really don't see what more can be done to get this information.
I think I'll give up and will no longer bother you.
Any way thank you very much for your help and having be so patient.
Click to expand...
Click to collapse
Take care, is not there, this is not the root directory. Is on Your screen post 8 on root you see efs folder. Is here You must try long touch... etc, my screens post 9.
This screen in this Your post is from /dev/block/platform/msm_sdcc.1/by-name/partitions, is not the root directory, the efs here is not a folder is a partition.
PS: Attach root directory whit efs folder, not file.

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ValenteL said:
Take care, is not there, this is not the root directory. Is on Your screen post 8 on root you see efs folder. Is here You must try long touch... etc, my screens post 9.
This screen in this post is from /dev/block/platform/msm_sdcc.1/by-name/partitions, is not the root directory, the efs here is not a folder is a partition.
Click to expand...
Click to collapse
Thanks a lot !! I almost kill my self to find this.Now I have it (of course) :victory::victory::laugh:
I will do the save.

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Tilagoon said:
Thanks a lot !! I almost kill my self to find this.Now I have it (of course) :victory::victory::laugh:
I will do the save.
Click to expand...
Click to collapse
:laugh::laugh::laugh::victory::victory: