[GUIDE] AT&T Galaxy S II Unlock Steps

dontknowa · Oct 6, 2011

Just wondering if I still get warranty from ATT if i brick the phone for instant?

sweetboy02125 · Oct 6, 2011

SkyDragon8 said:
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???

Mine is not complete muted like yours but ppl are troubling to hear me. I can hear them so well. Not sure how to fix this

illmac · Oct 6, 2011

out of curiosity, how exactly does that app work? was STUPID easy unlocking the phone lol

SkyDragon8 · Oct 6, 2011

gotit to work

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

Entropism, I have an ATT SGII i777. All my prolem is fix now. I belive the oc kernel was for i1900( int'l one). I reflash cwm kernal with Odin3 and everything is fine again.

Than I ran unlock and it work!!!! Show unlock using phone pad!!! Thanks

Also now install Setcpu and still OC to 1200???

Has anyone tried CM7?? Please point me in the right direction, thanks

---------- Post added at 04:15 AM ---------- Previous post was at 04:07 AM ----------

sweetboy02125 said:
Mine is not complete muted like yours but ppl are troubling to hear me. I can hear them so well. Not sure how to fix this

Sweet, I flash back to CWM kernal ( from first post) and fix problem.

---------- Post added at 04:22 AM ---------- Previous post was at 04:15 AM ----------

illmac said:
out of curiosity, how exactly does that app work? was STUPID easy unlocking the phone lol

illmac, what app r u refering?

ljwnow · Oct 6, 2011

SkyDragon8 said:
...
Than I ran unlock and it work!!!! Show unlock using phone pad!!! Thanks

Also now install Setcpu and still OC to 1200???

Isn't GS2 sporting a 1.2GHz CPU??

sweetboy02125 · Oct 6, 2011

SkyDragon8 said:
[/COLOR]

Sweet, I flash back to CWM kernal ( from first post) and fix problem.

Mine already using CWM kernal (cause i rooted with superoneclick)????

illmac · Oct 6, 2011

SkyDragon8 said:
illmac, what app r u refering?

the "galaxy s unlock" app

pb1866 · Oct 6, 2011

The app probably uses the well known nv_data.bin mod. In nv_data.bin there are 5 bytes that describe the various locks a phone will have. One of these locks is the network lock. By merely changing a single byte in this file from a 01 to a 00 the phone is left in an unlocked state. I didn't use the app but modded the nv_data.bin directly using a hex editor and copied it back.

gqonmars · Oct 11, 2011

Called AT&T and spoke to everyone and was told that my phone was too new and can't even find any code to unlock it. I wasted 2 hours with them. So, when I follow the root guide and this EASY unlock guide, I am able to use my China sim, UK sim.. Thank you for the guide.

Onething to note is that the unlock app tells me that it failed, it can't access something, so I tried it again, same error. I rebooted and try the *# key combo to check, and it was unlockeD.... Try putting in foreign sims, and not issues...

wtraco · Oct 11, 2011

*#7465625#
It works!
Thanks a lot!

kdoodle · Oct 11, 2011

Just out of curiosity. If I factory reset the phone, will the unlock still be on the phone or is this sort of like the iPhone in terms of unlock only when jailbroken?

DJLittleMike · Oct 11, 2011

Wow! Someone point out the Thanks button to me, please, because this worked like a charm. Awesome!

samsungcaptivates · Oct 11, 2011

Cant get this to work for me for some reason its telling me my busybox is jacked up or not installed

---------- Post added at 09:34 AM ---------- Previous post was at 09:30 AM ----------

ok nevermind im an ediot apparently i didint have busybox installed i installed it and all is well with the universe again

alanmw · Oct 11, 2011

Got a situation I don't quite understand and am hoping someone can help. I ran the unlock app by Helroz following the steps outlined in the OP of this forum. When I input *#7465625# all locks are now set to [off]. However, when I insert a foreign SIM and boot the phone, I get a screen asking for the PIN to unlock the phone which seems to indicate that it is still locked.
Any ideas why this is happening and how to resolve it?

nytvd · Oct 11, 2011

Maybe u need the pin for the SIM itself?

alanmw · Oct 11, 2011

nytvd said:
Maybe u need the pin for the SIM itself?

Thanks, that's an interesting idea. I can't remember if I had to have a PIN for the SIM last time I was overseas. Is a PIN for a prepaid SIM common?

nytvd · Oct 11, 2011

alanmw said:
Thanks, that's an interesting idea. I can't remember if I had to have a PIN for the SIM last time I was overseas. Is a PIN for a prepaid SIM common?

all my European ones need a 4 digit pin

alanmw · Oct 11, 2011

nytvd said:
all my European ones need a 4 digit pin

I think you've solved my issue. Many thanks!

Cozmo1 · Oct 12, 2011

Worked like a charm. Wasn't really needing it, but I'm betting some day I'd probably will. Backed it up anyways. Don't expect this to stay on the market for long.

mbze430 · Oct 13, 2011

ljwnow said:
*#7465625#

I keep getting an invalid Connection problem or invliad MMI code.. but I can make calls just fine... STRANGE!

is it because I am on CM7.1 and doesn't have the USSD code within the Samsung's original ROM?

[GUIDE] AT&T Galaxy S II Unlock Steps

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