[GUIDE] AT&T Galaxy S II Unlock Steps - AT&T Samsung Galaxy S II SGH-I777

1. Root your GS2 with the method on this page
http://forum.xda-developers.com/showthread.php?t=1285894
2. Go to market and search for "Galaxy S Unlock", the author is "Helroz".
3. Run the app from step 2. Go to "Unlock SGSII" tab on the top of the screen.
4. Tap on the first item:"Step 1 Backup files...."
5. Tap on the second item:"Step 2 Change lock-bytes", and wait until your phone restarts.
6.Bingo, your phone is sim unlocked after the reboot.

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ljwnow said:
1. Root your GS2 with the method on this page
http://forum.xda-developers.com/showthread.php?t=1285894
2. Go to market and search for "Galaxy S Unlock", the author is "Helroz".
3. Run the app from step 2. Go to "Unlock SGSII" tab on the top of the screen.
4. Tap on the first item:"Step 1 Backup files...."
5. Tap on the second item:"Step 2 Change lock-bytes", and wait until your phone restarts.
6.Bingo, your phone is sim unlocked after the reboot.
Click to expand...
Click to collapse
Went and confirmed it does actually work here is my screenshot showing it.
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Awesome. Works. Thankssss

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jivy26 said:
Went and confirmed it does actually work here is my screenshot showing it.
Click to expand...
Click to collapse
Thanks jivy26. But your picture won't show up...

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Lol should now and thanks for the find

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jivy26 said:
Lol should now and thanks for the find
Click to expand...
Click to collapse
No problem. Thanks for the guide of root.

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Thanks for the guide! I'm glad to be back on this site after getting rid of my iPhone!

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That's gotta be the easiest rooting instructions I've ever read! Helroz you are a god...

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oh wow! THANK YOU FOR THIS! wooooooooooooooot!!
edit: how do you check if you're unlocked or not? (like the picture from above)

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Awesome, worked for me. Thanks!

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illmac said:
oh wow! THANK YOU FOR THIS! wooooooooooooooot!!
edit: how do you check if you're unlocked or not? (like the picture from above)
Click to expand...
Click to collapse
*#7465625#

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thanks dude! this couldn't have come at a better time! gonna be out of the country next week..sweeeeeeeeeeeeeet

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illmac said:
thanks dude! this couldn't have come at a better time! gonna be out of the country next week..sweeeeeeeeeeeeeet
Click to expand...
Click to collapse
Without sim unlock, this phone is just a brick of mine...I am not with at&t...

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so you went out and bought the phone without a guarantee of a working unlock?

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Exactly ...
Sent from my SAMSUNG-SGH-I777 using xda premium

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Did Not Work
Ok, I had my SGII rooted with the ClockworkMod.Tar thru Odin3 and SuperoneClick. I also OC using Odin3 with galaxysii_OC_V1.tar thru Odin3 again and install setcpu..
I ran this unlock, but it never reboot, so I manually rebooted and check using the dail pad (from post here), and it says that I'm still lock.. I try it a second time and it did not work either..
Any Help will be appricated.. Also, my back button also does not work anymore. My Home button now acts as a back button.. anyone have this problem??

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SkyDragon8 said:
Ok, I had my SGII rooted with the ClockworkMod.Tar thru Odin3 and SuperoneClick. I also OC using Odin3 with galaxysii_OC_V1.tar thru Odin3 again and install setcpu..
I ran this unlock, but it never reboot, so I manually rebooted and check using the dail pad (from post here), and it says that I'm still lock.. I try it a second time and it did not work either..
Any Help will be appricated.. Also, my back button also does not work anymore. My Home button now acts as a back button.. anyone have this problem??
Click to expand...
Click to collapse
First make sure your superuser is working. As far as I know, there is no kernel for At&t GS2 that supports OC. Am I out dated?

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ljwnow said:
First make sure your superuser is working. As far as I know, there is no kernel for At&t GS2 that supports OC. Am I out dated?
Click to expand...
Click to collapse
Superuser is working I just check.. and now i have other problems. I now can not hear any sound nor the reciver of my call can hear my voice... the call goes thru but it's like everything is muted???

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Sky, do you have the AT&T Galaxy S2 or the international version?

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Wow, whoever did the spell checking for Samsung really screwed that one up!
"Personalizatiob Status."
jivy26 said:
Went and confirmed it does actually work here is my screenshot showing it.
Click to expand...
Click to collapse