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[provider unlock] samsung galaxy 551 GT-i5510

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By alucka, Junior Member on 11th January 2012, 08:52 AM
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Hi,
I have purchased a 5510 for one of my parents, without Contract, but blocked by a French provider: "Bouygues Telecom".
I think that's going to be easy to unlock, but I have not yet find how.
The phone has been flashed on the latest stock rom samsung (samfirmware) and it is not root.
if the root is necessary, what app or software is needed? and how to unlock?

ps: as a purchase without Contract, I can not ask my provider to unlock it.
 
 
12th January 2012, 12:34 PM |#2  
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[solved]
this solution works for me with the last rom samsung and rooted by "SuperOneClickv2.3.3-ShortFuse".

it's in french, so good luck with google translate!

phonandroid.com/forum/desimlocker-samsung-ace-s5830-en-invite-de-commande-t4206.html
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5th September 2012, 03:12 AM |#3  
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Quote:
Originally Posted by alucka

this solution works for me with the last rom samsung and rooted by "SuperOneClickv2.3.3-ShortFuse".

it's in french, so good luck with google translate!

phonandroid.com/forum/desimlocker-samsung-ace-s5830-en-invite-de-commande-t4206.html

I can confirm this works on my I5510M from Bell Mobility. I just tried it using a TELUS sim card.

Here are the steps I took:

0. Type in dial pad *#7465625#, make sure network lock is [ON]... if not you're not simlocked
1. If phone is not rooted, download SuperOneClickv2.2-ShortFuse.zip from this thread: http://forum.xda-developers.com/showthread.php?t=803682
2. Connect the phone to your computer using, windows 7 installed the correct drivers for me
3. Once the drivers are installed, disconnect your phone
4. Open SuperOneClick
5. Reconnect your phone to the computer
6. Press Root in SuperOneClick... wait for it to finish (may take ~2-5 min)
7. Your phone is now rooted, hooray
8. Make sure your phone is in debug mode. Settings > Applications > Developer > Debug Mode
9. Copy ADB folder from SuperOneClick folder to C:\
10. Open command prompt (start > run > cmd)
11. Type in the following commands:
Code:
cd C:/adb (navigate to the adb folder you just placed)
adb devices (to verify device is connected)
adb shell
su
cat /dev/bml5>/sdcard/bml5.img (thats an "L" not a "one")
exit
You just copied bml5 binary to the root of your sdcard. If you get access denied, your phone was not properly rooted, try again.

12. Mount your SDCard and copy bml5.img to your desktop
13. Download HexEdit here: http://www.physics.ohio-state.edu/~prewett/hexedit/
14. Open bml5.img in HexEdit
15. Press FIND, select HEX, and paste in "FF FF FF FF FF FF FF FF FF FF 30 30 30 30 30 30 30 30" (without quotes), then press OK
16. It should find the hex sequence, look to the right pane of HexEdit and you'll see an 8-digit numeric code (mine was split over two lines). This is your sim unlock code. Write down this code.
17. Turn off your phone
18. Place another networks simcard in your phone, and turn your phone back on
19. After it boots, it'll say this phone is network locked, and prompt for an unlock code... type the code found in step 16
20. If it doesn't prompt type in in the dialer: #7465625*638*# then type in your code
21. It should unlock no problem
22. Double check by typing *#7465625# in the dialer and making sure Network Lock is [OFF]

Let me know if you have any questions. Cheers.
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6th January 2013, 03:11 AM |#4  
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stuasmo City
Quote:
Originally Posted by JT-on

I can confirm this works on my I5510M from Bell Mobility. I just tried it using a TELUS sim card.

Here are the steps I took:

0. Type in dial pad *#7465625#, make sure network lock is [ON]... if not you're not simlocked
1. If phone is not rooted, download SuperOneClickv2.2-ShortFuse.zip from this thread: http://forum.xda-developers.com/showthread.php?t=803682
2. Connect the phone to your computer using, windows 7 installed the correct drivers for me
3. Once the drivers are installed, disconnect your phone
4. Open SuperOneClick
5. Reconnect your phone to the computer
6. Press Root in SuperOneClick... wait for it to finish (may take ~2-5 min)
7. Your phone is now rooted, hooray
8. Make sure your phone is in debug mode. Settings > Applications > Developer > Debug Mode
9. Copy ADB folder from SuperOneClick folder to C:\
10. Open command prompt (start > run > cmd)
11. Type in the following commands:

Code:
cd C:/adb (navigate to the adb folder you just placed)
adb devices (to verify device is connected)
adb shell
su
cat /dev/bml5>/sdcard/bml5.img (thats an "L" not a "one")
exit
You just copied bml5 binary to the root of your sdcard. If you get access denied, your phone was not properly rooted, try again.

12. Mount your SDCard and copy bml5.img to your desktop
13. Download HexEdit here: http://www.physics.ohio-state.edu/~prewett/hexedit/
14. Open bml5.img in HexEdit
15. Press FIND, select HEX, and paste in "FF FF FF FF FF FF FF FF FF FF 30 30 30 30 30 30 30 30" (without quotes), then press OK
16. It should find the hex sequence, look to the right pane of HexEdit and you'll see an 8-digit numeric code (mine was split over two lines). This is your sim unlock code. Write down this code.
17. Turn off your phone
18. Place another networks simcard in your phone, and turn your phone back on
19. After it boots, it'll say this phone is network locked, and prompt for an unlock code... type the code found in step 16
20. If it doesn't prompt type in in the dialer: #7465625*638*# then type in your code
21. It should unlock no problem
22. Double check by typing *#7465625# in the dialer and making sure Network Lock is [OFF]

Let me know if you have any questions. Cheers.

Thanks, I can find the hexstrings 24 times in the image file but none of them has a 8 digit numeric string close by.
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7th January 2013, 02:56 AM |#5  
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For unlocking purpose I need to copy /dev/bml15, I was able to access it but after flashing I can't access it any more,any ideas?

/dev/bml15: No such device or address


thanks.
# id
id
uid=0(root) gid=0(root)
# ls -l /dev/bml15
ls -l /dev/bml15
brwxrwx--- root root 137, 15 2013-01-06 14:54 bml15
# ls -l /dev/block/bml15
ls -l /dev/block/bml15
/dev/block/bml15: No such file or directory
# cat /dev/bml15 > /sdcard/bml15.img
cat /dev/bml15 > /sdcard/bml15.img
/dev/bml15: No such device or address
# dd if=/dev/bml15 of=/sdcard/bml15.img
dd if=/dev/bml15 of=/sdcard/bml15.img
/dev/bml15: cannot open for read: No such device or address
# ls -l /dev/bml15
ls -l /dev/bml15
brwxrwx--- root root 137, 15 2013-01-06 14:54 bml15
# which cat
which cat
/system/bin/cat
# id
id
uid=0(root) gid=0(root)
# uname -a
uname -a
Linux localhost 2.6.32.9-perf #21 PREEMPT Fri Jun 10 11:53:15 IST 2011 armv6l GNU/Linux
#
8th January 2013, 12:18 AM |#6  
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Worked for me - also a GT-i5510 from Bell
Quote:
Originally Posted by falcon09

Thanks, I can find the hexstrings 24 times in the image file but none of them has a 8 digit numeric string close by.

I found it a few lines up from where the first occurrence of the string was. In the Hex editor, try scrolling up a few lines and see if there's an 8 digit code that isn't 00000000 - my stuck out like a sore thumb once I went back a few lines.
9th January 2013, 12:56 AM |#7  
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Quote:
Originally Posted by falcon09

For unlocking purpose I need to copy /dev/bml15, I was able to access it but after flashing I can't access it any more,any ideas?

/dev/bml15: No such device or address

Are you trying to copy /dev/bml15 or /dev/bml5? The instructions I followed were for /dev/bml5 and that worked for my phone.

Colin
21st January 2013, 11:49 PM |#8  
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Why i can't find the 8 digit numbers ?
28th January 2013, 04:26 PM |#9  
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Thumbs up
that's awesome !!! was able to do mine.. I'm too happy to search for this thing as i was going to pay for the unlock... Thanks for sharing this buddy !!
29th January 2013, 12:54 PM |#10  
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thanks for the guide
5th March 2013, 10:58 PM |#11  
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Thumbs up Another Bell success story
My wife is on Bell and I'm on Telus. The only reason she hasn't switched is that Telus doesn't have a QWERTY phone she likes. These instructions worked flawlessly on her 551. XP found and installed the drivers with no problems. I used ES File Manager to copy bml5.img from the SD card to a shared folder on the XP machine via WiFi. When I ran the hex editor there was only one match for the hex search string and I scrolled up 2 lines and saw the code. I popped my Telus SIM in her phone and when it powered up it prompted me for an unlock code. I entered the code and made a couple of test calls.

I have attached a prtscr of the hex editor with the search string hilighted. Note that it's repeated 3 times and the scroll bar shows it's near the end of the file.
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