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This issue can fix by submitting your device to the Samsung service center. But if your device under the warranty, you can’t. Then you can’t claim the warranty. Now we can easily fix cannot mount efs folder issue without hassle.In some situation when we see this issue, we can’t even boot the device. Therefore, we can’t enable USB debugging. Although after installing CyanogenMod (I have tested) or other custom ROM with a CWM recovery these ROM enable the USB debugging in the recovery mode, even if the user disabled it in the settings. If your device still not installed a custom ROM or recovery, first install a custom recovery using ODIN then install the AOSP ROM normally.In order to follow my this tutorial, you should have an EFS folder backup as a.
Img format and as I mentioned above paragraph, device should install a custom recovery with a CM or any other AOSP ROM. Backup img file should in the internal memory or external micro SD card (not inside a folder). In case if your backup not in the internal memory you can now copy it to the micro SD card. Requirement. IMG format backup EFS folder. Custom recovery (I have tested on CWM touch recovery ). Custom ROM (Used CM ROM).
Select GT-I8190TWRP2.7.0.0.tar.md5 file which you have downloaded earlier. Ensure that Auto-Reboot and F.Resest Time is checked. Don’t click anywhere in the Odin. Click the Start button to start flashing of recovery. It will take few minutes. After some time your mobile get rebooted automatically showing pass message in Odin’s message box.
Latest SuperSU zip. ADB files zip.How to fix Samsung Galaxy phone failed to mount efs (invalid argument) issue.If you already installed a custom recovery and a ROM, you can start this tutorial from the 09 th step. Install a CWM recovery using PC ODIN.
Copy the efs backup img file, ROM and SuperSU zip files to an external SD card. Boot into the recovery. If your device in a continuous bootlooop, no matter press and hold the recovery mode booting keys.
![I8190 efs tarpon springs I8190 efs tarpon springs](/uploads/1/2/5/4/125446928/645458390.png)
![Octoplus Octoplus](/uploads/1/2/5/4/125446928/235892982.png)
(Different devices have different key combinations, most of the cases, it’s Home, Power and Volume Up keys). Install a custom ROM such as CyanogenMod. Recommend the CM ROM.
Then install the SuperSU zip file. Once ROM installed, go back to the Clockwokmod main menu, now reboot the phone. (Yes, your device may give a bootloop, no matter just reboots).
Connect your Samsung Galaxy phone, tablet to the computer via USB cable. Again boot into the custom recovery. (Each device has different key combinations to boot into the recovery). Uncompressed downloaded ADB + Fastboot zip file. Next in your computer go to the extracted ADB.exe file contain folder. Press and hold the shift key on the PC keyboard and same time right click on the ADB folder.
Next context menu choose “Open command window here”. Then type adb devices. It will show ADB xxxxx recovery. Next type below command.
RECOVERY ON GALAXY S3 MINI I8190:. Download the file for your variant carefully. Open Odin3.exe. Put your phone in download mode, to do so, turn it off completely.