I been playing with my phone for a few days now trying to get it to work and I haven't had much success although I have been learning a hole bunch and now able to load any rom onto my phone easily and flash kernels and such with ease...
The situation is that I received a phone from a friend SGSII I have never had a rooted phone and it came pre rooted, never knew much about it as it is my first Android phone and now love it
never knowing I had to do these things like "backup EFS directory" and such as I know now... anyhow, a few days ago what has happened is I have a stock rom + CF-Root and my phone all a sudden started telling me there is no IMEI and no SIM card present.. after much research, flashing of roms, kernels, bricking the phone, re flashing and so on and so foth....... xda-developers is a FANTASTICK site full of useful information btw now I'm still at the same point but a lot more knowledgeable, I have learned that the problem lies with my efs folder and have found a .nv_data.bak file that is dated dec 31 of last year, at this point it is my only so called backup and hope that it will restore proper functions of the phone, as per some of the guides and other posts and questions I have learned to do this.. so what I have done was copy using ADB my files to my sdcard folder renamed my nv_data.bin to nv_data.bak and my .nv_data.bak to nv_data.bin
also I have used root explorer to copy the hole efs folder to a location on my external sd card and used HC-kTool to make a backup of my efs folder
now I have been trying to use the command to copy my nv_data.bin file in the sdcard folder to my efs folder and it is not working as it gives me msges of write protected file or file exist canot copy... the commands I have been trying to use are
cp /sdcard/nv_data.bin /efs/nv_data.bin
cp /sdcard/nv_data.bin /efs/
I have tried also
rm command to remove the file but nothing has been working...
one thing I should mention is that I have been connecting withough usb cable as I can't seem to connect with that I keep getting device not found so I been using the wireless adb function
abd connect "ip addressort"
I have tried installing the kies driver for usb and the google sdk drivers and none seem to work, in fact kies doesn't reconize my phone aswell... but Odin seems to function through my USB just fine.... not sure if that matters or not but trying to give as much info as possible
Thank you in advance for the help.... this is a great site with very knowledgeable ppl
permissions have to be reset as the back up does not copy the permissions. Use cwm recovery to reset the permissions.
Thank you very much for you quick response, however I have just tried that, booted into cwm recovery, went to advanced and reset permissions, rebooted my hone and still cannot copy the file
Try using a Root Explorer from the market.Connect via wifi obviously if your phone cant detect sim.Phone needs to be rooted.Give Root Explorer root permission and set to R/W from R/O and copy paste the nv.data files and IMEI to the efs folder in the root of your phone,reboot,boot to recovery and "fix permissions" and boot again.
sorry I guess I should of mentioned that aswell but thank you very much for the suggestion... I have tried to edit the file weather just delet it or overwrite or change permissions with Root Explorer and to no success.. also when I push the mount r/w button in the efs folder... nothing happens and the button stays as mount r/w
I found this.Maybe it will help.
http://forum.xda-developers.com/showthread.php?t=1258734
http://forum.xda-developers.com/showthread.php?t=1261948
http://forum.xda-developers.com/showthread.php?t=1085374
and if you manage to get it back then use this:
http://forum.xda-developers.com/showthread.php?t=1308546
Thank, I havent had time to read through them all but I will try tonight and see if I can come up with a solution... I will post here my findings weather they are good or bad..... but thank you very much for the info
I have read and tried and seen all those post, thankyou for the info the problem is still that I cannot modify my nv_data.bin file in any way... I cannot overwrite to it or anything using rootexplorer or adb or any other program... does anyone know of any other programs or command lines to strip the read only permissions on this file as it seems stuck on this and it's driving me insane lol
Gave up
I gave up and had it done professionally, they couldn't figure it out either and had to replace the phone.... Thank you all for the great help, even tho we didn't get it figured out it was great that help was provided
Thank you XDA-Developers your awesome!!
ive the same issue,got a rooted s2 with cwm all the forums cay copy the efe data but i cant find a way,anyone know how to do it?,i need to eddit it to unlock my phone:ie the simlock.
thanks
thank you for sharing your ideas
I'm looking to use the AVD emulator (running 2.3.3 right now) to see about running custom ROMs from the SDCard. Thing is I can access the SDcard from the emulator, but to push files to it I'd imagine I'd have to use adb. I'm curious to see if there is an easier way (or quicker for that matter) to put files to the SDcard without having to push single files and then copy to the SDcard via adb. Does anyone know if there is another way?
What I plan to do next after pushing a ROM to the SDcard is to see if I can change the bootloader or have the bl point to the sdcard to run the ROM from there. But one thing at a time first. Thanks!
Hi Climber Ty,
Firstly, as your title indicates, this is a question and therefore it shpuld be in q and a I think.
I tried the AVD myself too and if you type adb devices is adb it shows up fine, so pushing via that way should work.
As you stated, this probably can be done easier. I believe the installer makes an .img file for the AVD, which is somewhere in the sdk/avd folder. There are editors available for img files (just search google and you'll find them) I think you can just copy your files into this img file and then they will be on your sdcard, never tested this though.
Sent from my HTC Desire using XDA App
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Moving to Q&A
I am trying to backup my phone with "adb pull /mnt/sdcard/ SDCARD20121115" but i keep having it fail in the middle of the backup with
cannot create 'SDCARD20121115\Folder\Folder2\Folder3\File.ext'
: No such file or directory
Ideas?
Still having issues with this and not sure how to backup my entire SD card...
Anyone?
Ok so i think i found the two different solutions to my problem.
First what actually was causing the problem was a folder with a $ sign in it. Using the command it looked like it failed on the file right before that folder so it didnt jump out right away.
Second i used a program called android commander that gives a gui. while this wasnt an actually solution i was able to select all but the folder tree structure that was failing instead of doing hundreds of directories by hand.
If anyone has any questions let me know.
*EDIT*
Looks like i had another failure on a folder. The folder had a trailing space "/storage/sdcard0/folder /file.ext"
Possible the $ sign works but to lazy to test.
I apologize if this question has been asked before; I have done some digging through the forums but I have been unable to find a complete solution/explanation for this problem. Essentially, I cannot copy NANDROID backups created through twrp recovery to my computer. I am using an HTC one AT&T version and a win7 computer. Obviously I have no sd card so I need to copy the backups from the internal storage. I find the backup folder just fine along with the backups I want (upwards of 3gb in size). However, when I try to copy them via USB or network transfer through an android file browser on the phone, only a few mb of files are copied, and no errors are generated. Other forum posts indicate that a simple copy and paste should work. While others indicate some sort of vague copy permissions setting preventing this action. The only solution that I've not tried is using "adb pull". I have no idea how to do that as I have zero experience playing with adb. Before digging into that and trying to figure out how to set up adb and find the relevant commands to do what I want, I would like to know if there is a simpler method of accomplishing copying my NANDROID backups. Any help would be appreciated, sorry if this is a noob question.