Sorry i'm confused Why are you using terminal emulator to locate the img I thought you objective was to backup efs which it sounds like PhilZ recovery did?...Just save one copy to your pc and leave a copy on your ext SD card.Your computer should recognize the copy on the SD card.. If the computer is not seeing the copy on SD card use a card reader instead of usb or copy the the file to a online cloud storage dropbox etc and download to your pc from there.
Also to see the file you would probably need a root explorer not the file explorer that comes with android..Or and PhilZ recovery stores the backup in clockworkmod/backup/ efs backup on your ext sd card
"How to install recovery?
•From download link below, you'll get a 'recovery.img' file. Put that recovery.img file at root directory of your
sdcard. (means not in any folder)
•Now, go to terminal emulator"
I can't even find the .img file to install PhilZ Recovery.
I just used Samsung Tool to create an EFS backup. Choosing the internal SD option worked but locating the files is a little trickier (I used ES File Explorer in root mode to navigate from the device's root folder through data/media/0/Samsung Tool). The external SD option worked and was easier as it just created a folder called "Samsung Tool" on my SD card with the .img and .md5 files. I then just plugged my phone in to my PC and copied them off from there.
I've used or tried to use: Ktool, SamsungTool, EFSPro, EFS Backup, PhilZ Recovery.
I've got various .img files, .md5, and .tar files. But none of these programs have produced ALL of the files they are suppose to.
Ktool: nv_data.bin NOT FOUND in backup!!!
SamsungTool: No .img file
EFSPro: Creates a folder EFSProBackup, with nothing in it. Dialog states "can't find .tar file"
PhilZ Recovery: Can't install. Terminal claims "no .img file found in folder"
EFS Backup: "can't find .tar file"
See attached for screenshots of EFSPro, and EFS Backup.
I'm passed the stage where i'm pulling my hair out, and i'm willing to risk installing roms without knowing if i've got a proper EFS backup.