Software application USB Driver:
SAMSUNG_USB_Driver_for_Mobile_Phones_V1.5.49.0.exe(15.27 MB)

SAMSUNG_USB_Driver_for_Mobile_Phones_V1.5.53.0.exe(24.46 MB)

SAMSUNG_USB_Driver_for_Mobile_Phones_V1.5.55.0.exe(24.46 MB)


Software for updating and emergency system recovery via PC:
Smart switch : Smart_Switch_PC_4.0.15082_16.exe (37.82 MB)

Samsung Kies 3 : Kies3Setup_2.exe (39.93 MB)



Odin - Samsung Smartphone Broker:
A new version

It so happened that Samsung’s efs flagships were in such trouble that it’s easy to “lose” efs, but it's hard to recover. Sometimes very much so.

Before you start browsing various firmware (modems), you should take care of the backup of the efs section - this is the only sure and guaranteed (it is worth noting that it is also free) to restore imei and serial number.
All known ways to backup / restore efs are contained in the header of our topic, as well as in the topics on the links.
Carefully read the backup and restore instructions.
Backup in several ways.
Store backups not only on the phone, but also on the computer and on "every fireman" on the cloud.

And so, with the introductory part figured out, choose the methods of backup yourself, go to the questionloss (gathering) of efs and its recovery.

1. Backup / Restore

1. The program for creating backup copies and recovery under Windows XP, Vista, 7, 8 -EFS Professional.zip(865.94 KB)
   Must have Microsoft .NET Framework v4.0 installedTheme on xda-developers.com Busybox_Installer
   
2. How to extract / copy the efs folder from "non-key"
   
3. Ways to create and restore a river efs (software copy / restore)
   
4. The program for creating and restoring efs- kTool
   
5. The program for creating and restoring efs - Samsung Tool
   
6. Backup and Restore IMEI (efs) on I9300with adb,teminalorRootExplorer
   
7. The script for creating an image efs.img under Odin from the efs folder, backup efs.ext4.tar, efs.ext.win
   
8. Scripts for creating and restoring efs.img with MODEM_PDA versions in the title
   
9. SAMSUNG_I9300_EFS_BACKUP_RESTORE_AUTOMATIC
   
10. Repair IMEI GT-I9300 with Samsung Remote Unlock Client Additional description to the program
    
11. Repair IMEI and S / N using the Chimera service (Chimera account)
    
12. Repair IMEI and S / N using Samsung Kies, using the device’s serial number
    
13. Repair IMEI without backup using Xposed Installer and module
    
14. Octoplus Box - Repair IMEI and S / N
    
15. Octoplus Box - Repair IMEI and S / N more detailed instructions

2. Determining the version of PDA / MODEM in the efs backup (efs, efs.tar, efs.img)

1. How to find out the firmware and modem version in efs.img
   
2. How to find out which version of your EFS backup (utility "EFS_backup_ver")
   
3. EFS Reader - program for reading data from nv_data.bin

3. Solving a problem when S / N (serial number) starts with 0000 ...

1. Modem patch at zero serial via PUMa program
   
2. Custom firmware with patched modem 4.1.2 (EFS v.2) for firmware from XXEMG4 and higher
   
3. Patched modem (Ariza patch) 4.1.2 (EFS v.1) and higher
   
4. Patched modem 4.3
   

4. Patched modems for problems with IMEI, IMEI became default - 0049 ... or 0000

1. Patched modems 4.1.2 (EFS v.2) for firmware from XXEMG4 and above

5. The phone is loaded into the recovery with the error message "E: unable to mount / efs (Invalid argument)" or "E: failed to mount / efs ..."

1. Error "E: unable to mount / efs (Invalid argument) (AromaFM)
   
2. Error "E: unable to mount / efs (Invalid argument) (EFS Calibrate)

6. Repair IMEI, S / N with a programmer
Samsung i9300 Imei Null / Unknown Baseband Repair Done

Get root with modified TWRP recovery
Get root through a modified PhilZ Touch recovery.

CF_Auto_Root_I9300_4.3_recovery_XXUGND2 for_OdinPC:
I9300-4.3_ND2-CF-Auto-Root.tar.zip(13.85 MB)


Modified Recovery:
PhilZ Touch Recovery for OdinPC firmware:
philz_touch_6.48.4-i9300.tar.zip(7.69 MB)

04/28/2015 Added to the section "Drivers and Utilities":USB Driver V1.5.53.0 dated 2015.04.21
05/28/2015 Added to the section "Drivers and Utilities": the Samsung "Smart Switch" application replacing the "KIES" application
06/21/2015 Instruction has been added to the section “Backing up / restoring efs” to extract / copy the efs folder from the device that is not included.
06/27/2015 Instruction was added to the section “Backing up / restoring efs” to restore codes using the Samsung Kies application.
07/19/2015 Added instructions in the section "Backing up / restoring efs" to restore IMEI, paragraph 14
09/06/2015 Added instructions in the section "Backing up / restoring efs" to restore IMEI and S / N, paragraph 16