How to unlock/unfreeze all SGS Models [NOW WORKS ON Vibrant 4G]

[mr_loverman]

This method works on my Vibrant 4G. Please email me if it doesn't work on your Vibrant 4G or SGS 4G.

PRO App also works on Vibrant 4G/SGS 4G for anyone who doesn't feel comfortable with a hex editor

Please note the same information used to develop the app is in the guide for free... the app just makes it easier

ALL METHODS FOR NEWER PHONES REQUIRE ROOT... PLEASE GO GET ROOT ON YOUR PHONE AND THEN COME BACK.

Oh and BTW... I cannot be held responsible for anything that happens to your phone.... EVER!

Before you start... if you don't have root you WILL need it.

Step 1. - Retrieve nv_data.bin file
Check locks... go to phone and enter *#7465625#

use "adb shell" or a terminal emulator to get a terminal prompt and run the following commands


Code:

su
cat /efs/root/afs/settings/nv_data.bin >> /sdcard/nv_data.bin

Step 2. - Edit nv_data.bin file
mount the internal SD Card on your computer
make a backup copy of the nv_data.bin file on your computer
using your favorite HEX editor open the nv_data.bin on the sdcard
jump to address 0x1469

you should see a string like this
ff ff 01 00 00 00 00
there are 5 different types of locks in 5 different bytes
the FF bytes should be left alone
the first byte after the FF is the network lock
the next byte is the network subset lock
the next byte is the sp lock
the next byte is the cp lock
the last byte appears to be a data lock.
Change any 0x01 to 0x00 (or 0x00 to 0x01 to lock for warranty)
save and close file
unmount SD Card

Step 3. - Replace nv_data.bin file
I want to say it again so no one misses it MAKE SURE YOU HAVE A BACKUP OF YOUR NV_DATA.BIN FILE BEFORE YOU CONTINUE!!!!!

use "adb shell" or a terminal emulator to get a terminal prompt and run the following commands



Code:
su
rm /efs/root/afs/settings/nv_data.bin
cat /sdcard/nv_data.bin >> /efs/root/afs/settings/nv_data.bin
chmod 755 /efs/root/afs/settings/nv_data.bin

chown radio.radio /efs/root/afs/settings/nv_data.bin || chown 1001.1001 /efs/root/afs/settings/nv_data.bin
reboot
your phone is now unlocked... enjoy

source [REF] How to unlock/unfreeze all SGS Models [NOW WORKS ON Vibrant 4G]