Hi I have searched many threads with regards to missing IMEI and Baseband unknown. There are many solutions including the 9 step guide and also the app called S2 Repair. I had this problem and i used S2 Repair and it worked a treat. I then used Galaxy S Unlock and that also worked a treat.

I have downloaded I9100_EFS.tar.md5.zip from nspro support. I9100 EFS repair file problem. Done with Samsung Tool v.17.0 Selected model: I9100. How to Backup and Restore EFS / IMEI on Samsung Galaxy Devices – Did You Do It? All went well and the back up file GT-I917_165911.tar.gz has been. I don't what to do at this point besides going to samsung and send it to repair I really hope. The wrong cwm.tar file. Simple IMEI Repair (efs folder.

However I did a software update via kies and on phone (i wish i never did now) and I am back to no IMEI and Baseband Unknown and S2 Repair no longer works? After lots of reading i think S2 repair is tring to repair the wrong files??? My question is this. I did not make a back up of my EFS folder before using S2 Repair or Galaxy S Unlock BUT i have got all the files in the EFS folder in the root of the phone EXCEPT (dot).nv_data I DO HAVE nv_dat and (dot).nv_data.bak files I also have folders in the sd card named S2Repair which has 'efs_save.tar' and 'efs_save.tar.gz' WILL I BE ABLE TO USE the files in the S2Unlock folder??. In this folder there is the efs folder and these files 'efs_save_for_sgsII.tar' 'efs_save_for_sgsII.tar.gz' 'nv_data.bin' 'nv_data.bin.unlocked' JUST TO CONFUSE THINGS EVEN MORE I have just found 2 more files on sd card called ' efs.img' and efs.tar.gz' GALAXY I9100, GINGERBREAD XWKI4, 2.3.4 BASEBAND VERSION UNKNOWN, BLANK IMEI Any help appreciated!! Quote: Originally Posted by xsenman First and Foremost you are posting this in the wrong forum, so not many can advise you about it, ( will ask MOD to move you to S2 Forum) But not to worry as long as you have so many backups, you can use them to overwrite your current efs folder or use restore function in S2 Repair and restore the backup. Just for your guidance read In fact KIES will auto repair this problem, when you connect to it for updates as ( in most cases) 2.3.4 is old firmwares and have further updates.

I am not sure how many of you visiting this page are familiar with the presence and importance of the EFS thing that we are going to talk about today! Actually, I often hear people requesting to offer a solution of a problem that makes them unable to make a call, send a message, access internet or any connectivity related thing. Imagine a mobile phone without a network connection at all and you’ll then realize how horrible it is! If EFS is so important a thing, it must be preserved so that you might be able to use all connectivity features of your device. This thing is found in all mobile devices which have an IMEI (International Mobile Equipment Identity) number assigned to it but the location and directory where it is stored might differ. On Samsung Galaxy devices, the IMEI and other connectivity data are stored in this particular folder that I have been mentioned several times so far. Having read about the role of EFS on your Samsung Galaxy phone or tablet device, you must be a little more curious to know something more about it.

EFS is a system directory that contains device specific essential information such as its IMEI, wireless device MAC address, baseband version, product code, system ID and NV data. In case the EFS directory is corrupted or lost, your phone or tablet is sure to lose its IMEI number and wireless and network connectivity. You might ask how and why does the EFS data on your device might be lost or get corrupted? The answer is pretty simple and the reason might be a daring activity on your part. Sometimes flashing a custom Kernel (as reported by some users) and in most cases installing a custom ROM is responsible of the EFS data loss. In this way, the EFS or IMEI loss is deeply related with what you do after rooting your Samsung Galaxy device. Keeping this thing in mind most of our ROM developers insert a script that automatically creates a backup of the EFS data on the external SD Card so that you might restore it back in case of loss or corruption.

But it is certainly not wise to rely blindly on the wisdom of others. That is why, whenever we write installation tutorials for custom ROMs for Galaxy device, we warn users to backup EFS before indulging in any custom development activity. Sadly, most people come to know about the thing called “EFS” only when it is too late. Once lost without being backed up, recovering it becomes very much like a wild goose chase.

You might have heard or faced personally the issue when your device shows inability to mount EFS: E: failed to mount / efs (invalid argument) If you get this message on your phone’s screen, believe me you have got into a serious problem. Of course, there are ways to restore EFS data, but they are either not available for all devices online or they do not work at all. It has been well said that “prevention is better than cure” and this saying hold quite true in this case too. Putumayo Asian Lounge Rar File there. Therefore, the first thing that one must do just after rooting and installing a custom recovery one’s device is to backup the EFS and the stock rooted firmware. For more enlightening tips, do not forget to read the following article: Reasons for EFS Data Loss or Corruption: • Manually upgrading and downgrading firmware. Some users reported that they lost their IMEI during official OTA update. • Installing a custom ROM or mod might mishandle system configuration, resulting in corrupt EFS.