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[TUTORIAL] Unlocking(relocking) Samsung Galaxy Ace GT-S5830i

OP Cuii

9th May 2012, 10:20 PM   |  #1  
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At the beginning, i gave my girlfriend a galaxy ace GT-S5830i.
My Network is the Telenor, Her is the T-Mobile.
So i wanted to unlock it..
All the methods of the GT-S5830 isnt worked.
After few long days, ive found a relock method (Network Provider Change (not unlock))

Progies, you need:
- Android SDK (or simply an ADB environment, below uploaded)
- KIES (only for the drivers)
- Root file(below uploaded)
- Hex editor(Below uploaded)

First you have to root your phone.
- Copy the update.zip to SD card
- Turn off phone
- Press and hold the Home button, and the volume up button.
- Press and hold the power button, until the Galaxy Ace text appears and disappears.
- When disappears, release only the power button...
- Wait until the Galaxy Ace text appears and turns into bright yellow.
- Release all the buttons, and the recovery comes up.

-Choose the apply update from SD card, then choose the zip, you copied.
reboot your phone...

Alright, Here comes the relock procedure
- First make sure, the usb debug is turned on...
[Settings>applications>Development>USB Debugging]
and the drivers are installed correctly (if it isn't, then install KIES)
- exrtact the ADB.zip from below to C:\
- Open Start Menu, then open Run command, and write here :

cmd

Then a command prompt comes up..
The commands:
Code:
c:
cd adb
adb shell
su     !! A SU windows pops up in your phone.. Allow it !!
cat dev/block/bml15 > /data/local/bml15.bin
exit
exit
adb pull data/local/
Open this link:
h t t p :// en . wikipedia . org/wiki/Mobile_Network_Code [remove the spaces]
Search for your current MCC and MNC.
and the provider, you wanted to change to.

write it down. First the MCC and then the MNC

For example i'd like to change from hungarian Telenor to hungarian T-Mobile
So for the hungarian telenor's MCC is 216 and MNC is 01 => 21601
and the hungarian T-Mobile's MCC is 216 and MNC is 30 => 21630

Extract the XVI32, you downloaded.
open it, and open the bml15.bin in your C:\ADB

Press ctrl+F
At the Text String line enter your code (my example code is: 21601)
press ok
Change it to your next code (My example next code is: 21630)
Save it as bml15_unlocked.bin

Then open your command prompt again.
Code:
c:
cd adb 
adb push bml15_unlocked.bin /data/local/bml15_unlocked
adb shell
su
dd if=/data/local/bml15_unlocked of=/dev/bml15
exit
exit
Reboot your phone with the new sim card
Attached Files
File Type: zip update.zip - [Click for QR Code] (1.11 MB, 3573 views)
File Type: zip xvi32_253.zip - [Click for QR Code] (557.6 KB, 2977 views)
File Type: zip ADB.zip - [Click for QR Code] (375.7 KB, 3294 views)
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15th June 2012, 02:30 PM   |  #2  
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Quote:
Originally Posted by Cuii

At the beginning, i gave my girlfriend a galaxy ace GT-S5830i.
My Network is the Telenor, Her is the T-Mobile.
So i wanted to unlock it..

much easier way in my sig, also applicable for ACE S5830i
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25th June 2012, 01:23 AM   |  #3  
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Quote:
Originally Posted by Doky73

much easier way in my sig, also applicable for ACE S5830i

Yes much easier thanks unlocked my S5830i no problems!! cheers!!!
19th July 2012, 12:04 AM   |  #4  
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Quote:
Originally Posted by Cuii

Code:
c:
cd adb
adb shell
su     !! A SU windows pops up in your phone.. Allow it !!
cat dev/block/bml15 > /data/local/bml15.bin
exit
exit
adb pull data/local/

Sorry I'm fairly new to this sort of stuff, how should I enter the code?
19th July 2012, 03:14 AM   |  #5  
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Quote:
Originally Posted by TootyPang

Sorry I'm fairly new to this sort of stuff, how should I enter the code?

Forget about this commands, if your device is S5830i then download Galaxy Toolbox from Google Play Store! It's free...

See my sig!

Sent from my SGSII using Tapatalk 2 & Swype
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19th July 2012, 12:30 PM   |  #6  
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Quote:
Originally Posted by Doky73

Forget about this commands

some will prefer to press a button some want the hard way and finally all are winners
unfortunately I don't have a Samsung phone to test it but surely someone is to appreciate first post on this thread too !
29th July 2012, 12:03 PM   |  #7  
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Great post Cuii easy to follow!

I was able to pull the bml15.bin. But now when I opened it, I have trouble finding the unlocking code. It doesn't seem tho match the wikipage
Can someone tell me on which line the code can be found? It's mentioned in XVI32 on the left (in hexadecimal) and on the bottom in decimal address.

Thanks!

<edit> : never mind it turned out my new phone was already simlock free !!! it was supposed to be simlock at delivery. I guess my provider made a mistake
Last edited by pieper2; 29th July 2012 at 12:41 PM. Reason: it had no unlock after all
11th August 2012, 02:32 PM   |  #8  
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Thanks this has saved my mates phone (he imported it was supposed to be unlocked but it wasnt). I tried every other procedure without success but this worked. Cheers
12th August 2012, 04:19 AM   |  #9  
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very nice tutorial keep sharing THANKS!!!!
16th March 2013, 05:37 PM   |  #10  
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Did not work
Hello I tried the rooting as suggested and my phone does not turn on now. All it does is flash, I tried to flash my phone and still does the same thing after it reboots. Odin says that it passes but it still does not.

Any suggestions?

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