Unlock Samsung phone
Download SuperOneClick Root
and XVI32 Hex Editor to open the file.
Method (Terminal App) download that on your get that on your phone
– Open Terminal Emulator app
– Grant Super-user access to application
– The following commands will be executed in current opened application:
– cat /dev/block/bml5>/sdcard/bml5.img
– exit (2x)
– Close the application.
|Attention: If you run cat command with the path from above and it’s says the file doesn’t exists or something like that make sure you try “cat /dev/bml5>/sdcard/bml5.img“. For Samsung GT-S5570 the files is under /dev/block.
|If you get this message when trying to access .bml file while your connected to PC: Permission Denied then try to get your USB card out of Mass Storage mode, so card won’t be used by another process.
Ok, so after using one of these methods we have our file bml5.img in our PC if we used first method or on our /sdcard if we used second method. Keep in mind that we need this file on our PC, so if you used second method just copy the file to PC!
Now comes the part where we need to work with the file that we just extracted. So, in order to get the unlock code we need a HEX Editor, i’ve used XVI32 Hex Editor to open the file.
• Finding the unlock code
– Open XVI32 Application that we just downloaded. Hit CTRL+O and select the bml5.img file that we extracted earlier. (Open the file)
– At the first look we will see just a bunch of FF’s and 00’s and random decimals or symbols, but somewhere deep in there it’s our unlock code.
– Hit CTRL+F to open search dialog, select “Hex String” and put the following search string
|FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 30 30 30 30 30 30 30 30
(maybe the search string won’t be the same for all phones, but the one from above worked for Samsung GT-S5570)
– Mark “Case Sensitive“, Direction “Down“, Scope from “Begin“.
– Click ok, or hit ENTER to start our search.
– So now, we must hit F3 untill we find our unlock code.
Our unlock code will be 8 digits plain text surrounded by unknown symbols just like in image below.
(I’ve hited F3 like 3 times, but don’t know if it’s the same for everyone. Also to make sure you see the code, after hitting F3 make sure you go 2-3 rows up to make sure the code is not above the searched string.)
(Unlock code can be finded in multiple places in file, so if you skip one searched string by mistake, just pay attention for next ones)
After getting the unlock code, write it somewhere in PC or paper… close the phone, remove the actual SIM Card, insert a foreign one and turn it ON! Wait untill it boots up, insert the unlock code and your done. Now you have an unlocked phone!
|Attention: Unlock code can be extracted using a Custom ROM like CM7 in my case, the file was there, but can’t be unlocked since the window to insert code doesn’t appear(pop-up). In order to unlock your phone you must have a Stock ROM that actually can read any Samsung code and have that Network unlock code window!
|Most custom roms that tries to remove blur break the subsidy lock interface (sim unlock screen doesn’t show on them). If you flash other rom and subsidy unlock screen doesn’t pop when you insert foreign sim, you will need to flash back stock ROM in order to unlock. So the easyest way for those of you running a Custom ROM, just do a nandroid backup using CWM, flash Stock ROM, unlock your phone then restore your backup.
• Useful Codes
|*#7465625# – Dial code to check if phone it’s network locked.
#7465625*638*UNLOCK-CODE# – Replace UNLOCK-CODE with your 8 digits number, then dial. Phone might reboot.
Details about test environment
Phone used: Samsung Galaxy i5500
Android Version: 2.1
PC Windows: Windows 7 (64-bit)
Categorised as: Hardware/Software