I am trying to remove forgotten PIN number on my Samsung Galaxy S3 without removing any data.
I already installed custom recovery TWRP, but cannot mount /system partition -> Invalid argument error. I found some tutorials that suggest changing /system file system to FAT and then back to original file system, to be able to mount.
I am affraid this will remove all data and I want be able to use my phone.
Is this correct?
The phone is not rooted, but error is not about permissions, but about some argument.