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[i9003] SIM Unlock for free!!!

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Junior Member - OP
Thanks Meter 29
Posts: 14
Join Date: Sep 2007
Talking [i9003] SIM Unlock for free!!!

I found an easy method to unlock the i9003.
To do this you will need an Hexadecimal editor and have root access to your phone.


1. Make a full backup of the /efs folder
2. Get the nv_data.bin file located in /efs
3. Open it with an hexa editor (I used WinHex)
4. Go to line 181460 and modify from 01 00 00 00 00 to 00 00 00 00 00
5. Copy the modified nv_data.bin file into /efs
6. Set the appropiate owner user and group doing chown 1001.1001 nv_data.bin
7. Remove the nv_data.bin.md5 file
8. Reboot your phone
9. Enjoy!!



ADB commands:
# su
# cd /efs
# cp /sdcard/nv_data.bin /efs/nv_data.bin
# rm nv_data.bin.md5
# chown 1001.1001 nv_data.bin
# reboot

To check it you can do *#7465625# and verify that Network Lock is [OFF]

I hope it can be useful for you.
The Following 27 Users Say Thank You to fyter For This Useful Post: [ Click to Expand ]
Thanks Meter 0
Posts: 70
Join Date: Sep 2011
Location: Sfax
after installing a new ROM and unlocking like this could the phone read my SIM card normally ?? (i'm in north africa - Tunisia)
Misledz's Avatar
Recognized Contributor
Thanks Meter 8,346
Posts: 6,126
Join Date: Jun 2011
Location: Cebu City, Philippines

Depends if your phone is region locked. Normally it shouldn't be locked, but some carriers with plans lock the phone
Thanks Meter 26
Posts: 75
Join Date: Jan 2011
Thanks!! It works fine on my phone.
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Nov 2011
nice job man.. it works fine
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Jan 2012
Default Thanks!

It worked perfectly!
Junior Member
Thanks Meter 0
Posts: 1
Join Date: Feb 2009
It works. Fantastic solution
StifMaster's Avatar
Senior Member
Thanks Meter 29
Posts: 130
Join Date: Apr 2012
Location: Brescia
Nice Work Man!!

Sent from my GT-I9003 using Tapatalk 2
Junior Member
Thanks Meter 3
Posts: 15
Join Date: Jan 2012
Location: Buzau
It works! You are a good man
Senior Member
Thanks Meter 5
Posts: 109
Join Date: Feb 2012
Location: SPAIN
Man my file has only got 2 lines written.... what can be the problem? Im copying the efs folder in my SDcard, then i choose the called file and it has 32 bytes. only 2 lines written.. Any helps?
**** Samsung Galaxy SCL ****



Vurrut, Miui, CM , Cranium... All roms I tried :P

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