HC-ktool, okay for backup EFS - General Questions and Answers

Hi, don't know if this is a noob question or not but couldn't find a definite answer from search, I read that HC-Ktool can be used for backing up your EFS folder, and for restoring, but once backed up is that all I have to do, because I have seen posts where people say that you have to write in script and stuff, just wanted to know if the HC-ktool was a safe enough back up or Not?
Thanks for any help!
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Related

Beginner guide for Nandroid

I want to back up my phone using Nandroid, but after reading through the guide posted at:
http://forum.xda-developers.com/showthread.php?t=459830
i am very confused.
i have JesusFreaks RC33 firmware on my phone. In the above post it says i have to have all this other stuff, which im not sure if i have or not. i also dont know where to begin. Can someone write up a quick guide on how to do this?
Thanks.
Assuming you are running Windows, did you read the second post in that thread? http://forum.xda-developers.com/showpost.php?p=3311708&postcount=2
What part do you need help with?
thats how to restore, i need to know how to backup
cronin4392 said:
thats how to restore, i need to know how to backup
Click to expand...
Click to collapse
Turn off phone. Hold home+power. Then I believe it is alt+b to make a backup. When it finishes, hit home+back to reboot. The backup image will be on you SD card in a folder named Nandroid.
i kind of understood that part, but i would imagine that i have to do things before that step, like put certain files on my phone.
Nope, it's all integrated into the JF build.
oh lol, wow that was alot easier than i thought.
thanks alot.
last question, is the backup the nandroid folder on my sdcard?
Yes....
This thread should now be locked

No NV_DATA.BIN !!!!!

hi all
my problem its the classical no nv_data.bin on the /efs section , the one i found its on efs/root/afs/settings but its BLANK nothing on the file i soft brick the phone several times and restored again and again and nothing.
i use the metode using the package T595VUVKF1 and the froyo PDA.KD1 and
are any way to make a full format of the ramdisk to make a fresh install?
i ask this because the section ROOT of the efs NEVER dissapear allways its there.
T-molibe T959v
Did you make any previous back ups on your phone?
Sent from my SGH-T959V using xda premium
nope no backups at all. the original microsd was of 2gb so i put one of 16gb the other i give to a friend.
so no backups
kbrontox said:
nope no backups at all. the original microsd was of 2gb so i put one of 16gb the other i give to a friend.
so no backups
Click to expand...
Click to collapse
Well.... Sorry I suggest searching XDA through GOOGLE and read the other hundred posts and suggested fixes regarding the issue. Try the different methods mentioned. There is one guy 'ODIA' that I have read, and seems to be the only one, who can fix this issue. But you have to pay him, give him access to your computer and the sensitive info on your phone. I tried helping somebody with about a dozen methods and none of them worked for him. But he had a null IMEI (all 0's) and his phone still worked.
> > A thread you start with.
> > A thread you can try next. It also has a video to watch.
One option is to flash to complete stock and take your phone to T-Mobile. Tell them it happened when using Kies mini to upgrade to GB. I read over and over that it has happened to people during that process which would not be your fault and they should help you fix it.
Good Luck!
ty for you time
i didwhat you say and they ask me if i have a phone line whit them ofcourse i dont so they say " just clients can have help from us , and i recomend you to TRASH that phone its TOO OLD!!!!!"
so ive make a guru thing transplan a nv_data.bin from a galaxy ACE to this and see what happend .
Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A

[SOLVED] Efs?

What is it? Because I want to download the mokeeOS, but the installation is confusing me, so I wanna know if the efs matters
Sent from my SGH-T959V using XDA
1. Yes efs matters a lot
2. I don't know a whole lot but it holds the network info, imei number, and alot of other really important things
Sent from my SGH-T959V using xda premium
Although there is a way to make sure you have a backup, flash this file in cwm
sourceforge.net/projects/teamacid/files/fb/cwm/cm7-efs-backup.zip/download
And there will be two files in the root of your sd card
Efs-backup.tar and efs-backup.tar.md5 ( I suggest save it to your computer, it saved my ass )
And you can restore this backup at anytime by flashing this
sourceforge.net/projects/teamacid/files/fb/cwm/cm7-efs-restore.zip/download
Good luck
Sent from my SGH-T959V using xda premium
Efs is the files system that holds the unique identifiers for your device. Without it, your phone is basically useless. You won't be able to connect to any network properly do things like phone calls, internet, texting, are all degraded, if they even work at all... Make sure you know what you are doing before messing with it. Fb created a vet good guide on the wiki. Follow it to a T!
Sent from my SGH-T959V using XDA
I would suggest using a root browser to copy the EFS folder to somewhere safe on your PC and copy a 2nd back-up to your SD card. I lost IMEI going from CM7 to moKeeOS but was able to easliy restore it with a back-up and a root browser.
The flashable EFS back-up/restore from FB should still be used, but with EFS/IMEI I don't think you can be too careful and backing it up manually as previously stated is a good idea.
Yeah, I keep multiple copies of it on my PC. The reason being is that I copy it whenever I do a backup before a flash. So I have a directory with the date with 3 folders: efs, nandroid, and sdcard. I used adb to copy them:
Code:
cd efs
adb pull /efs/
Probably overkill, but better to be safe than sorry, eh?
Ok, but once you lose IMEI and don't have a backup (I received this phone for repair), then what can I do?
serialteg said:
Ok, but once you lose IMEI and don't have a backup (I received this phone for repair), then what can I do?
Click to expand...
Click to collapse
It's pretty much screwed without the OEM Samsung/Tmo software. You would have to send it to Samsung for repair, or you might get lucky and get an engineer to hook you up, but that is unlikely...
thomas.raines said:
It's pretty much screwed without the OEM Samsung/Tmo software. You would have to send it to Samsung for repair, or you might get lucky and get an engineer to hook you up, but that is unlikely...
Click to expand...
Click to collapse
thanks for the answer. that OEM software isn't available in the forums or anywhere else for us? because I swear I flashed something OEM'ish without root with heimdall.
also, the imei is on the battery part of the phone, can't i fix it?
i read somewhere that you could use a phone just fine without imei on the about phone.
you can use the phone without imei, but it doesn't function as well as it would with it. Also, i was using titanium backup and it said my device's id was changed, and it showed my actual imei. If i were to restore it, would that fix the imei?
EFS help on the SGH-T959V
Basically, I've had a hell of a time with some EFS drama this weekend, made a total noob mistake, but in a stroke of luck I was able to "recover" so to speak my EFS even after it was supposedly "wiped."
After some thorough research and READING and bit of thought, I realized that the PIT mapping layouts between BML and MTD are indeed different, and that in theory if one remaps to BML (in layman's terms a stock partition map) then the EFS data originally on the phone gets correctly remapped (at least in my case it did).
To reiterate:
1. I did a nandroid backup. Basic ****. I hope to god you at least did this step too.
2. I used the cm7-efs-backup.zip script to backup my EFS. This was my first mistake. In my case, I don't know why I'm still researching, this script failed to make a backup .tar on my sdcard or anywhere else for that matter. It didn't throw any error messages either on the screen in the process. Not trying to attack the authors of that script, I'm just saying it didn't work for me this time.
3. I pushed the TWRP boot.img with Heimdall
4. I used the cm7-efs-restore.zip script which also "succeeded" but did nothing to restore any sort of EFS obviously because there was no backup to begin with.
5. I flashed R11 unofficial cm7 and booted up. Everything was fine but the IMEI was corrupted and I confirmed that the new MTD EFS partition was empty. On T-Mobile I could place no calls and only got sporadic and intermittent data access.
It was at this point I was sure I had ruined my phone.
After some more careful reading I realized that the original EFS was still present on the firmware, however the new MTD layout I flashed (wisely) stores its EFS partition in a different physical location. In theory, I thought if I reverted to BML and a stock ROM then I would recover the original EFS. In my case, this was successful.
1. I accessed the most recent "boot.img" file from my most recent nandroid and pushed that back to the device with Heimdall
2. At this point you have to flip your USB drivers back to USB Composite Device.
3. I then used a Heimdall one click to return to a rooted stock KJ6 "Gremlin Remover"
4. Upon restart, everything was fine (sigh of relief)
At this point, I'm still trying to determine why my EFS cannot be backed up with a few automatic tools. I made a backup of the file structure, but even lyriquidperfection's EFS Pro 1.4.7 can't make a backup of the EFS. It can access the ADB Server, but the backup 'fails'.
I'll check back in after I figure out why.
Hopefully this info will help anyone else who has switched to MTD and has a missing EFS.
nick.tansy said:
At this point, I'm still trying to determine why my EFS cannot be backed up with a few automatic tools. I made a backup of the file structure, but even lyriquidperfection's EFS Pro 1.4.7 can't make a backup of the EFS. It can access the ADB Server, but the backup 'fails'.
I'll check back in after I figure out why.
Hopefully this info will help anyone else who has switched to MTD and has a missing EFS.
Click to expand...
Click to collapse
I had similar issues yesterday. If your trying to install the twrp and then downgrade to the version with wifi dont flash the boot.img with heimdall. Follow the instructions for installing via cwm.
Just install the zip that has twrp in it. But follow the directions for normal cwm installation.
Also when trying to make a backup of your efs, make sure system is mounted. I initially did not have any problem but I was on antonx's kernel and when you flash with that recovery it would mount properly. What is happening is system isnt getting mounted. So its making a null backup.
The most important thing to do is when you are trying to make a backup of your efs is mount system!
Hi have you tried the updated EFS Pro v1.7.13? It can now automatically detect the mount point of the '/efs' folder for back up and restore. Also many many bug fixes and new code to communicate with adb.exe alot more quickly and efficiently.
Head over to the forum and check it out.
I already solved this problem, but this would seem useful other people with the same problem. But what forums are you exactly referring to?
Sent from my SGH-T959V using XDA
mierkat09 said:
I already solved this problem, but this would seem useful other people with the same problem. But what forums are you exactly referring to?
Sent from my SGH-T959V using XDA
Click to expand...
Click to collapse
This one.
http://forum.xda-developers.com/showthread.php?p=18524176

The important things to do? (like to save the EFS folder)

Hello XDA,
I have my nexus 5 and before i start hacking, I would like your advice on what to do first.
For example, save the EFS folder (I did a full backup with TWRP) .
What else?
The most important thing to do is read the pinned (stickies) threads in the general forum. That way if something does go wrong you'll know what to do. Sounds like you've already made a nandroid, good

[Q] quick question

I have a Alcatel One Touch Pop 7 tablet from T-Mobile. There is someone on a YouTube video who has the same tablet, but has bricked it installing a custom ROM. He is begging me to make a backup of my "system" folder to send to him.
My question is, is that safe to do? I'm a complete noob when it comes to rooted devices, so I don't know if there is anyway that could be damaging to me, or if I would be doing someone a solid and helping them bring their tablet back to life.
Please, can someone advise me if this is OK or not (me making a backup of my system folder and sending it to him?)
Thanks in advance for reading and responding
auburn2eugene said:
I have a Alcatel One Touch Pop 7 tablet from T-Mobile. There is someone on a YouTube video who has the same tablet, but has bricked it installing a custom ROM. He is begging me to make a backup of my "system" folder to send to him.
My question is, is that safe to do? I'm a complete noob when it comes to rooted devices, so I don't know if there is anyway that could be damaging to me, or if I would be doing someone a solid and helping them bring their tablet back to life.
Please, can someone advise me if this is OK or not (me making a backup of my system folder and sending it to him?)
Thanks in advance for reading and responding
Click to expand...
Click to collapse
Yeah, No Problem Dude for Backup...It is totally Safe...
Backup provide your data safe & if by mistake you delete your any files... You can restore again. So,Don't Take Doubts any Backup your system.
next question
I copied the system folder for him. Now he is asking for the boot.img file. I searched my tablet with Root Explorer and it didn't find a boot.img file... Any ideas?
backup your kernel with any app. just google it.
davidpersi said:
backup your kernel with any app. just google it.
Click to expand...
Click to collapse
This isn't about me making a backup for me. I am trying to help someone who bricked their tablet, as said in my first post. I backed up the folder he asked me to back up. Then I uploaded it to my Google drive and sent him the link. He got my upload, and messaged me back saying the folder did not include the boot.img file. So, with Root Explorer, I searched my tablet for the boot.img file. Root Explorer didn't find the file he was missing. I am asking if anyone knows where I should look?

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