[Q] nv backup - Nexus 5 Q&A, Help & Troubleshooting

Can I use nv backup on a nexus 5 to restore a lost/corrupted imei?
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spodie said:
Can I use nv backup on a nexus 5 to restore a lost/corrupted imei?
Sent from my Nexus 7 using xda app-developers app
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You'll wanna check out the EFS Backup solution here: http://forum.xda-developers.com/showthread.php?t=2514095
or TWRP offers an EFS backup as well. Not sure of other recoveries and TWRP does everything I need it to do, and well.
But if it is already corrupted...yikes. I haven't seen any tools to fix that on the Nexus 5. Remember some in the Samsung forums, but not helpful here...
Some people had success with just fastboot flashing the stock cache.img file, though depends on what borked it in the first place.

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[Q] IMEI Backup Qustion

I read in one of the threads that if your IMEI is good (mine is, have yet to flash a ROM), that you could simply copy the EFS Directory from your phone to the SD card, etc. I copied the entire EFS folder to the internal SD card and also to my PC. Two questions:
1. Is this all I will need in the event I somehow lose my IMEI
2. When I look in the IMEI folder inside the EFS folder it is only 3 bytes, doe that really contain the IMEI
3. (ok, I lied about the 2 questions) I read someplace that if my bootloader is unlocked (which it is), I didn't have to worry about losing the IMEI?
Thanks
This is the way to backup IMEI. http://forum.xda-developers.com/showthread.php?t=1852255
Unlocked or not, you can still lose IMEI on any reboot.
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mybook4 said:
This is the way to backup IMEI. http://forum.xda-developers.com/showthread.php?t=1852255
Unlocked or not, you can still lose IMEI on any reboot.
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this is what ive done also.
it was very easy to do.
mybook4 said:
This is the way to backup IMEI. http://forum.xda-developers.com/showthread.php?t=1852255
Unlocked or not, you can still lose IMEI on any reboot.
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Is this the best way to back up now? I remember that there was once a method using dd. But it's didn't always restore correctly right? Are there any other methods?
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sage3 said:
Is this the best way to back up now? I remember that there was once a method using dd. But it's didn't always restore correctly right? Are there any other methods?
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This is the standard way to backup your IMEI. The old method is not as comprehensive, read the OP of the method that you quoted and you will see why this way is more complete.
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Awesome! Yeah I had read it, but just wanted to make sure!
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Help Needed urgently!

I cannot restore my nandriod backup in cwm! Someone pls help.
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peepee999 said:
I cannot restore my nandriod backup in cwm! Someone pls help.
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Sad story.
But what is the problem? Any error message? We can't help us if you don't tell us what's wrong.
polobunny said:
Sad story.
But what is the problem? Any error message? We can't help us if you don't tell us what's wrong.
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Something like mid sum mismatch in cwm,
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peepee999 said:
Something like mid sum mismatch in cwm,
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MD5 sum mismatch? Then either your backup is corrupted or you changed versions of Clockworkmod Recovery in between backing up and restoring. What version are you using?
peepee999 said:
Something like mid sum mismatch in cwm,
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Did you rename the backup by chance to something with spaces in it and unapproved characters? Backups can't have any spaces and must use A-Z, 0-9, and underscores in the filename.
polobunny said:
MD5 sum mismatch? Then either your backup is corrupted or you changed versions of Clockworkmod Recovery in between backing up and restoring. What version are you using?
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Made a backup to try out a new rom then wanted to restore and couldn't. Cwm 6.0.0.1 touch.
I didn't change versions in btw
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peepee999 said:
Made a backup to try out a new rom then wanted to restore and couldn't. Cwm 6.0.0.1 touch.
I didn't change versions in btw
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6.0.0.1 or 6.0.1.0?
polobunny said:
6.0.0.1 or 6.0.1.0?
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Sorry it's 6.0.0.6
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peepee999 said:
Sorry it's 6.0.0.6
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There were a lot of issues with CWM recovery v6 prior to 6.0.1.0. One of them being backups getting corrupt. There's good chances your backup is corrupt and you'll have to start fresh. You can try installing 6.0.1.0 and see if you're able to restore (although I would doubt) or you can try to restore partially (Go in Advanced Restore).
Either way, make sure to upgrade to the latest version once you are done.
One more thing, have you touched the Clockworkmod folder in any way? Touched the blobs folder? Freed space? Because the way the new Clockworkmod works is incremental, so you don't want to modify anything.
No i didn't tamper with dat folder. Pls can u point me to where i can download the version u are talking about?
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peepee999 said:
No i didn't tamper with dat folder. Pls can u point me to where i can download the version u are talking about?
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Download page:
http://www.clockworkmod.com/rommanager
Rightmost column.
Personally I do not like the new CWM v6, so I'm using version 5.8.0.2 Touch. Very reliable, but the backups are larger than the new one (but complete instead of incremental)
Nexus S
http://download.clockworkmod.com/recoveries/recovery-clockwork-touch-5.8.0.2-crespo.img
Nexus S 4G
http://download.clockworkmod.com/recoveries/recovery-clockwork-touch-5.8.0.2-crespo4g.img
Pls i don't know how to flash img, how do i get a zip version?
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peepee999 said:
Pls i don't know how to flash img, how do i get a zip version?
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http://wiki.cyanogenmod.com/wiki/Ne...de#Installing_the_ClockworkMod_Recovery_Image

[Q] will a factory reset restore my EFS for galaxy gs2 T989?

will a factory reset restore my EFS for galaxy gs2 T989? My efs folder is empty so i cant back it up, but i have a good imei. I dont know what to do but wipe this *****
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tapuout27 said:
will a factory reset restore my EFS for galaxy gs2 T989? My efs folder is empty so i cant back it up, but i have a good imei. I dont know what to do but wipe this *****
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i dont think it does, i think there's another option in cwm for that?
I get to CWM from reboot?
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tapuout27 said:
I get to CWM from reboot?
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you can get into cwm from rom manager, if you dont know how to get into cwm since your device is a Galaxy s2 t-mobile, turn it off, hold power up and power button at same time untill you see the samsung logo.
A similar problem occurred with my Samsung Galaxy GT1900. The efs folder was corrupted and I was unable to fix that. Factory restore, rooting and installing a new ROM also didnt helped. There were few guides here to fix it by ourselves with some tweaking. But none worked.
The only way i made it work is that by buying a gadget called J-tang or just J tang.
By connecting J tang to PC and mobile to J Tang it manually pushes a new efs folder. But by this yout IMEI number will be changed and you will get a new IMEI number which will restore the mobile to working condition. That's how I fixed it.
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32 GB to 16 GB?

I have a 32 GB version Nexus 5, but now I see this in the memory section of the settings:
I run Slimkat+ Code Blue kernel... what is happened?
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Covered million times. Even in some of the sticky threads. Please use search
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You mean the fact that 32 GB isn't really 32 GB but something like 29 GB?
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No. I mean a 32 GB version showing as a 16 GB version
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I find it... so I have to do a factory reset to solve this?
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If I full wipe the smartphone and then I restore the nandroid backup of the Slimkat (a nandroid of how I am at the moment) it will work?
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Possibly.
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Ok, let's try.
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It doesn't work..
How can I do?
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Ok, I'm going to use the second method. (Second post of the thread "how to flash the factory image"in the sticky roll-up)
Just a question: flashing the factory image will delete my nandroid backup, right?
If yes, I can save a copy of the backup in my pc and paste it in the device after flashing the factory image and restore it?
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The factory reset would also have deleted your nandroid if you'd done it from stock recovery like the thread says.
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In fact I see this after the factory reset with TWRP, anyway I can do what I said in the last post?
To flash the recovery stock I simply use the command fastboot flash like I was flashing the factory images or I have to do anything else?
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Backup your nandroid to computer
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Now I try, thanks.
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Giolte_ said:
Ok, I'm going to use the second method. (Second post of the thread "how to flash the factory image"in the sticky roll-up)
Just a question: flashing the factory image will delete my nandroid backup, right?
If yes, I can save a copy of the backup in my pc and paste it in the device after flashing the factory image and restore it?
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Flashing the factory image will wipe your device if you use the flash-all bat. Copy your nandroid to your pc. You can copy it back after you re-flash install your recovery
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Ok, it worked, now I have only the last question:
In the "TWRP" folder in the Nexus now I have to put only the "BACKUPS" folder or "BACKUPS" and ".twrps"?
Thanks!
Giolte_ said:
Ok, it worked, now I have only the last question:
In the "TWRP" folder in the Nexus now I have to put only the "BACKUPS" folder or "BACKUPS" and ".twrps"?
Thanks!
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Click to collapse
You'll need to put the nandroid backup file in twrp/backups/your device serial number/
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Yes, but now that I have reflashed the TWRP there is no folder in it, just TWRP..anyway I saved on PC the whole folder "TWRP"
Giolte_ said:
Yes, but now that I have reflashed the TWRP there is no folder in it, just TWRP..anyway I saved on PC the whole folder "TWRP"
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If you make a backup of where you are now it'll create the folders
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Ok, now I try, thanks!

[Completed] [Q] Nandroid Backups

Hello!
Was wondering if I'd get new notifications when restoring from a Nandroid backup.
Hi, thank you for using XDA Assist. I'm not sure what you notifications you're talking about? A nandroid will restore you device to the same condition your phone was in when you made the backup. It's like restoring an image on your pc.
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jd1639 said:
Hi, thank you for using XDA Assist. I'm not sure what you notifications you're talking about? A nandroid will restore you device to the same condition your phone was in when you made the backup. It's like restoring an image on your pc.
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Well.. General new notifications. Say for example, a text message on Whatsapp. Do you know if that would appear in my notifications or in the app when I restore?
If you got them before, you'll get them again. A nandroid is nothing more than an image of your system the exact same way it was when you made the nandroid.
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jd1639 said:
If you got them before, you'll get them again. A nandroid is nothing more than an image of your system the exact same way it was when you made the nandroid.
Sent from my Nexus 9 using XDA Free mobile app
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Alright. Thank you!

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