Samsung Galaxy Note 2 Fix E:failed to mount /efs (Invalid argument)SCH-I605
su
rm /efs/FactoryApp/keystr
rm /efs/FactoryApp/factorymode
echo -n ON >> /efs/FactoryApp/keystr
echo -n ON >> /efs/FactoryApp/factorymode
chown 1000.1000 /efs/FactoryApp/keystr
chown 1000.1000 /efs/FactoryApp/factorymode
chmod 0744 /efs/FactoryApp/keystr
chmod 0744 /efs/FactoryApp/factorymode
reboot
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Solve the problem with commenting on the logo and the appearance of the message E: failed to mount / efs (Invalid argument)
Upon entering the recovery
The problem lies in the EFS sector and the problem causes the device to stand on the boot screen and not work
Flashing or formatting with this case
The solution, of course, is very simple and tried by myself on more than one device. Just download the EFS file from the link below the article
Flash the file via Odin in the AP field. After flashing the file, you will have to disable Factory Mode
Where you will see phone information on the main screen in yellow, you only need to do a root for the device
Open the Z3X Samsung Tool and choose the I9300 and go to the Repair field
Then click on Disable Factory Mode and wait for it to finish, then restart the phone
If you do not have Z3X, go to the command prompt by pressing ctrl + r and type cmd
It will open the command wave window only, type these commands one by one
adb shell
su
rm / efs / FactoryApp / keystr
rm / efs / FactoryApp / factorymode
echo -n ON >> / efs / FactoryApp / keystr
echo -n ON >> / efs / FactoryApp / factorymode
chown 1000.1000 / efs / FactoryApp / keystr
chown 1000.1000 / efs / FactoryApp / factorymode
chmod 0744 / efs / FactoryApp / keystr
chmod 0744 / efs / FactoryApp / factorymode
