yashsingh1/xdaforums huggingface dataset:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
SGH-I747, CM11, UCUEMJB, 4.4.4 - permanently locked to AT&T

Hi,

I'm in Germany, and a friend brought me their old AT&T S3 over from the US. I was unaware that you were only allowed five attempts at entering the network unlock code, so by the time I contacted AT&T and got my legit unlock code, the phone was already permanently locked to AT&T.

Given the specs above, is there any way to unlock this phone?

Having read this thread there seem to be problems downgrading from 4.4, but I'm on CM - would that make a difference?

Also, I have the IMEI that my phone info gives me, but another IMEI that's written on the label of the phone under the battery. AT&T also provided me with an unlock code for this second IMEI. Would I be able to use this second unlock code if I find a way to go back to original ROM?

(I hope I posted in the right place and provided all the necessary info...)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
The IMEI that you get when dialling *#06# is the IMEI that is important, not the IMEI on the label.

The unlock code was entered while running a stock ROM?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
It is not the android version of the ROM that prevents downgrading, it is the version of the bootloader and modem. If the bootloader and modem are 4.3 or newer they can not be downgraded to use the free unlock method found in the forums, the one that requires 4.1.1 modem and dialer. In the past there were people running early releases of CM and AOSP kitkat roms on 4.1.2 bootloaders and modems (downgradeable). Current releases require 4.4.2 bootloaders and modems, these can not be downgraded.

audit13 asked if entered the unlock code while on a stock rom. That is an important question because from what I have read you must be using a stock dialer for the codes to work. Even the codes purchased from third party vendors. Some of the custom TouchWiz roms used dialers from other Samsung devices (SGS 5) and the codes would not work.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
I got the phone with Cyanogenmod 11 on it. In "phone info" it also says 4.4.4

I entered the code without making any changes on the phone.

Apparently I entered too many false codes (not knowing any better i tried my SIM code from my SIM card and my PUK and a few retries thinking I mistyped) before I eventually got the codes from AT&T. By this time the phone was already permanently locked to AT&T.

---------- Post added at 07:56 AM ---------- Previous post was at 07:46 AM ----------

OK, so if I entered the codes while on CM they wouldn't have worked anyway, no matter if they were right or wrong?

Is there a way then to go to regular android 4.4 on my phone and then try my AT&T codes again? You know,without downgrading?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
The phone may or may not be permanently sim locked as unlock codes don't usually work with a custom ROM; however, if the ROM was using a stock Samsung dialler, it could be permanently locked.

In a previous post, you indicated that your phone is running an MJB bootloader. You should also confirm that the phone is using an mjb modem. If both items are mjb, look here to get back to stock 4.4.2: http://xdaforums.com/galaxy-s3-att/general/ucuemjb-to-ucufne4-firmware-update-t2808654
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Okay, I'd love to try that. How do I find out what modem my phone is using? (I have "Phone info" installed, if that helps.)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
You mean the samsung phone info app? That should tell you.

Also, I recommend not posting any of the imei #s on a public forum.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Quick question: does "baseband version" mean modem?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Oh God, I just went to that page and tried to read the first few pages...

I don't understand even a little of what's going on.

What would the UCUFNE4 firmware update even do? Will that take me to stock ROM so I can try and enter my AT&T unlock code?

If that's what it does I'll give it a try, but there's a serious warning that I "will probably brick" my phone.

I'd rather make sure that that's what you're recommending.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Whenever a phone is flashed with firmware, there is always a possibility that something goes wrong and the phone gets bricked.

It's up to you how you want to proceed. XDA members have reported success with the zip.

Since you already have a custom recovery, you could try flashing this ROM: http://xdaforums.com/showthread.php?t=2504903 to see if it prompts you to enter an unlock code.

I do not have an i747, I have the i747m which has complete ROMs available to deal with soft bricks.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
First of all, let me thank you for all your kind and patient help.

I just checked my apps list and I says I'm using com.android.dialer. I take it that means I'm on stock dialer after all?

So I may as well save myself all the trouble with flashing to a different ROM and remain with my S3 as a tiny tablet without mobile network?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
You need the stock Samsung dialler, not the stock android dialler. I don't have my Samsung phone in front of me to check. If the phone was running cm11, it is unlikely to be running a Samsung dialler.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Ah, okay, so I'll just give those methods a try whenever I have a bit of peace and quiet :)

Thanks again for everything!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] baib88:
My S3 is with Rogers. I am already on stock 4.3. can someone suggest a reputable website for unlock code? how much $CDN should it cost?

many thanks
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Cost of unlocking is around 15 CAD. There are several reputable unlockers on eBay.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Hm. I flashed the NE4 in recovery, as it said in the link, but now I'm still on Cyanogenmod, and 4.4.4, while bootloader and baseband are NE4...

And the unlock code from AT&T still didn't work.

I'm not sure if I should try the 4.3 method you posted a link for. There seem to be many problems involved. Do you have any further suggestions?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
The phone needs to be running a stock ROM in order the enter the unlock code. The code will not work with a custom ROM; however, the unlock code may work with a TW-based custom ROM. You could try flashing a custom TW-based ROM that does not change the the phone's existing bootloader and modem.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] baib88:
my I747 baseband is I747MVLDLK4, I am on liquidSmoothv2.10, Android Lollipop 4.3

Can I directly flash stock rom 4.1.1?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
What is the bootloader? The bootloader needs to be older than mjb in order to flash a stock ROM via Odin.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
I tried googling and looked through different forums to find such a ROM, but I don't eve know how to go looking for what I need. Could you point me in the right direction? Or even just give me some keywords to use with Google?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
I'll need a bit more information. Boot the phone into download mode. Do you see anything on the screen about Knox or warranty bit?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Samsung phone info says Knox warranty void: 0x1
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
You can't load any stock ROM using Odin anymore as your phone has a 4.3 or newer bootloader. In your previous post, you mentioned that you had the ne4 bootloader and modem.

You could try this ROM: http://xdaforums.com/showthread.php?t=2789917
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
I've just read through a lot of that thread and I realize I'm not really tech savvy enough to venture into this. So thank you for all your help, but at this stage I reckon I'll save up for a new Android phone and stick with my abominable Windows Phone for the time being.

Peace, out.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
It's pretty simple to flash the ROM.

You need to have the latest version of TWRP on the phone. Download a file #3 from the first post, boot into TWRP, and flash file #3 you downloaded.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Oh welll, what's the worst that can happen? :D

So I just flash that file in twrp? Do I need to wipe everything first, though?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Make sure you are running the latest TWRP. Save the ROM to an external SD card.

Boot into TWRP, wipe cache, data, flash ROM, reboot.

If you get stuck in a bootloop, flash the stock recovery from the first post, immediately boot into stock recovery, perform a wipe of the data and cache, reboot.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] juppschmitznippes:
Ok, I did everything, and am now on stock ROM, no problems whatsoever :)

Sadly, the unlock code still wasn't accepted :(

So, I guess that's it for trying to get this phone working with my own German SIM-card. Oh, well.

Thanks for all your help though, it is much appreciated.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
I guess the phone is permanently locked to att.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Pavkata:
A quick question!

Hello all,

Thanks a lot for this. It helped me a lot.

I am using S3 i747 and installed custom ROM (Unofficial Cyanogenmod 13.0 for d2att -Android 6.0 - 12/22 - A2dp Fix) from here in the forum, however as I am using my phone out of USA, it was unlocked some time ago and now when I installed the custom ROM it locked again.

I managed to install the original ROM and thanks for this article, I unlocked it again.

My question here is, can I update the version (as now I am using 4.1.1) and can I install custom ROM and the unlock to remain for my curent career?

thanks in advance for any help and thoughts.

Regards, Pavel
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Which custom rom did you install that caused the phone to become sim locked again?

It is strange that the phone would become sim locked after flashing a rom. I have used the free method to unlock several i747m phones and they all remained unlocked after flashing stock and custom ROMs.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Pavkata:
HI,

The ROM I used, I provided the name into the first post. "(Unofficial Cyanogenmod 13.0 for d2att -Android 6.0 - 12/22 - A2dp Fix)"

Now, it continues with the old (stock) ROM, but I wtill want to use the customer ROM :)

Let me know what details you might need to clarify this.

P.S. It was locked when I bought the phone some years ago, we unlocked it at some later point and when I installed the custom ROM, it locked the phone again.

I haven't tried to upgrade to the custom ROM now, after I had used the trick from this post.

Cheers, Pavel
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Well this is strange because I have used the free method to unlock several Note2 and s3 phones. None of them have relocked after upgrading the stock ROM or moving to a custom ROM.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SuperDroid519:
MY phone says Warranty bit : 0

MVLUFNH2 is my bootloader.

I'm not sure if this is 4.1 or 4.4 please help
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mrrocketdog:
it would appear to be a 4.4.2

"err on the side of kindness"
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] SuperDroid519:
Damn. TY

Does anyone know of any progress anywhere with unlocking 4.4 without paying for a code?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] forgedice:
NW Lock NV Data INITIALLIZ. Problem

NW Lock NV Data INITIALLIZ. My phone ... Rogers.... does not have this on the menu...... when you first get to it or when you return after 30 seconds from the last menu. What can I do and why is it not there.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
What rom is running on your Rogers phone? If it's stock 4.3 or higher, you'll have to buy a code.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ianos21:
This worked for me. I had a Locked AT&T S3 which I previously updated to FW 4.4.2 and modem NJ2 then flashed Resurrection Remix M ROM. Then I decided to unlock the phone in case I decide to leave AT&T, and I don't want a locked phone anyway. I got the unlock code from AT&T and it didn't work on custom ROM of course. I returned to latest stock ROM 4.4.2 using enewman17's xda thread, instructions and files (I can't post links yet but it's easy to find - searched d2att stock rom). Phone still would not accept unlock code. I followed the above 10 steps and it accepted the code. Restored my RR backup and enjoying carrier unlocked phone now. Thanks.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] AjvarXX:
Android 4.1.2 - UNLOCKED. Followed exact step by step (Perso OFF, Downrade, NV) an it worked. Thank you.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] smrsxn:
Comment, I made was not useful to the discussion.

So i deleted it by editing the post.

Meanwhile if you do discover a way to unlock on 4.3, without downgrading and bricking, do let us know.

---------- Post added at 11:03 PM ---------- Previous post was at 10:07 PM ----------

Found another way as mentioned in this xda thread.. it does not work either.

http://xdaforums.com/showthread.php?t=2283068

Last bit when you have to restore a nv backup, I get a message saying att has blocked backups.

Geez...
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Tky_Electronics:
Certainly will teh moment i get one in on 4.1.3 or i might even upgrade the software just to try it i will.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] lgm7w:
I cant Download the firmware 4.1.1

where i can find a working link? thanks
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sedwards1969:
i can confirm this works and is quite easy. i am in quebec with virgin mobile . they wanted 50$ for an unlock code then i found this and tried it. i drove down to plattsburg ,ny today and bought a prepaid plan from at&t . i put in their sim card ant it worked right away . thanks for posting the procedure :victory:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sugarlumps:
Could I just follow the steps 10 to 13, if I got the 4.1.1 firmware already installed?. Because I have a Galaxy S3 SGH-I747

with this firmware.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Tky_Electronics:
yes.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] thartist:
New Download Link

I cant post outside links so someone will need to edit this.

After many failed attempts to download due to missing content and website shut downs... The only link I found so far to download the firmware 4.1.1 for samsung galaxy s3 sgh-i747 seems to be:

terafile dot co > 55653f7ee172>I747UCDLK3_I747ATTDLK3_ATT.zip (replace dot with . and > is / and no spaces.)

This link seems to match the original description for the firmware described as:

"I747UCDLK3 firmware version for Galaxy S III LTE (AT&T) (SGH-I747) from region ATT"

I have not tested this download nor confirmed if it works so proceed at your own risk. I am however going to try it as soon as it finishes downloading and I'll report the results.

Also the link comes from sammobile dot com and this is the information they had:

---------- Post added at 08:24 AM ---------- Previous post was at 08:16 AM ----------

See my previous post for a link and on the website up top choose the free download. It took me about an hour on 50Mb/s internet.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] thartist:
To be clear for any future NOOBS like myself. STEP 6 you hold down power, home, and volume down until the phone turns on and displays a yellow triangle. Then is when you would push volume up. I was just pushing it and then volume up letting the phone turn on normally.

Confirmed the package from the download link I originally posted did work and passed with Odin. Vol Up, Home, Power key wouldn't factory reset for me. I had to do factory reset via menu options with the phone on with lots of errors popping up. Eventually hitting ok to all of the errors they will go away and you can make your way to the factory reset option.

Thanks!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] traitimmapu:
Can someone please confirm if this method works with Rogers i747m and WIND T999V on 4.3 firmware?

Thanks
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] trojjanhorse:
doesn't work on 4.3 Telus i747M
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] UnderPL:
i have a telus i747 on 4.1.2 rooted, I can't flash to 4.11 I get "<ID:0/004> NAND Write Start!!

<ID:0/004> FAIL! (Auth)" in odin and on my i747 its said SECURE CHECK FAIL : aboot

any help is appreciated
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] smrsxn:
Folks - there is no way to unlock galaxy s3 on 4.3 version via any setting changes.

Only way is to pay up to one of these sites that offer unlocking codes.

Hoping to cut the chase for others.... good luck!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Tky_Electronics:
The only thing i can say is do the unlock before upgrading to 4.3.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] tramuyo:
can't be done even if we flash modem only? (being in 4.3)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] n0013z:
great post tky. worked perfectly for me now am unlocked and sim card working.

question tho. after reverting back to stock 4.1.1, I tried doing OTA to see if i could go back to 4.1.2 but its showing no update available check again in 24 hrs. should i try flashing back to 4.1.2 or should i wait to see if there will be an OTA update?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] mtv-googler:
firmware link is broken

> Step 4 - Download firmware 4.1.1 for i747

The link to download the 4.1.1 firmware is broken and this appears to no longer be available (or else the entire thread was another malware/unlockware misdirection). Does anyone have a link to a trustworthy site for the 4.1.1 i747 firmware for the AT&T model?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Bmb196:
Help! I finally got Odin to recognize my phone but I get this error when I try and load 4.1.1 for my Galaxy S3 SGH-I747

<ID:0/011> Added!!

<OSM> Enter CS for MD5..

<OSM> Check MD5.. Do not unplug the cable..

<OSM> Please wait..

<OSM> KIES_HOME_L710VPBLJ7_L710SPRBLJ7_329968_REV03_user_low_ship.tar.md5 is valid.

<OSM> Checking MD5 finished Sucessfully..

<OSM> Leave CS..

<ID:0/011> Odin v.3 engine (ID:11)..

<ID:0/011> File analysis..

<ID:0/011> SetupConnection..

<ID:0/011> Initialzation..

<ID:0/011> Get PIT for mapping..

<ID:0/011> Firmware update start..

<ID:0/011> sbl2.mbn

<ID:0/011> NAND Write Start!!

<ID:0/011> FAIL! (Auth)

<OSM> All threads completed. (succeed 0 / failed 1)

Is there a way to fix it?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] robbinh00d:
1. Does it need to be an official upgrade? What if we've installed the latest CM which has 4.3.1? It's probably not that "official".

2. What if we have a nandroid backup from an earlier version of android? Can we restore to earlier version, then use the 4.1.1 firmware, unlock, and go back to 4.3?

Just curious.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Try here: http://www.sammobile.com/firmwares/
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] CallMeAllie:
Odin 3.07 not recognizing my phone in ID:COM

Hey all,

Trying to downgrade from 4.1.2 to 4.1.1 in order to unlock an at&t galaxy s3 (SGH-i747). I've downloaded the right firmware file and Odin 3.07, but my issue is that Odin will not recognize my phone. In addition, when putting it in download mode, it stays in the "Downloading... do not turn off target!!" screen, with:

Odin Mode (in RED)

Product Name: SGH-i747

Custom Binary Download: No

Current Binary: Samsung Official

System Status: Official

Qualcomm secureboot: Enable (in Gray)

Any thoughts on how I can get Odin to recognize my phone? Is my phone really installing drivers? Please help!

Many thanks, these forums have helped me through many a technical issue, though this is my first post!

Allie

EDIT: Looks like it may be driver related. I've downloaded the latest, but not sure how to get them on the phone...

EDIT 2: They're not FOR the phone, idiot.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] TopoX84:
hi guys i was having a small issue downloading the .zip too many link broken and very slow downloads that will ping time out on me...

i did more research and found out that the .zip in fact is a .tar.md5 which you can find in the following link http://d-h.st/E5R all thanks to Skunk Ape1 for the upload
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] GeekWBeats:
I am running a North american version of this S3 SGH-1747m

have made every attempt to unlock sim . the closest attempt being the one prescribed for 4.1.2

seemed to work succesfully..

"Dail *#197328640#

Main Menu

[1] UMTS

[1] Debug Screen

[8] Phone Control

[6] Network Lock

[3]Perso SHA256 OFF

Wait a few seconds then press menu and go all the way back to the main menu.

[5] run EFS Sync()

Reboot and done.

however I am unfortunately at 4.3 ,and there seemed to be effect , SIM IS STILL LOCKED

is there any sequence to unlock the sim on this update ?

because downgrading firmware is now impossible !

HELPP
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Swa9ga:
Are we able to downgrade from 4.1.2 to 4.1.1 to get this to work?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] crystal_to_short:
Help!!!!!

Hi i have a Gs3 i747 att firmware 4.1.2 and been trying to unlock i had followed the steps..

Dail *#197328640#

Main Menu

[1] UMTS

[1] Debug Screen

[8] Phone Control

[6] Network Lock

[3]Perso SHA256 OFF

once i get to the last step of waiting 30sec and then going back i dont have the choice to pick

[4] NW lock NV Data INITALLIZ i get [4] RAT_FREE_SUPPORITING ON. i have downloaded Odin but cant get the firmware link to open i have tired to open it on two different computers. what should i do????

Thank You.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ra4013:
After 30 second wait go back twice to main menu and select (5) EFS sync

Sent from my SAMSUNG-SGH-I747
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Wirelessmodz:
This doesn't work if you are on 4.1.2 it must be 4.1.1 they closed the loop hole
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
For those on 4.3, do not attempt to flash an earlier ROM and bootloader as doing this will brick your phone.

As mentioned above, you need to be on stock 4.1.1.

---------- Post added at 07:14 PM ---------- Previous post was at 07:13 PM ----------

If you are using the Rogers/Telus/Bell version, you can flash a stock 4.1.1 ROM via Odin, unlock, and flash back to 4.1.2 via Odin.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Blackcobra95:
Anyone have a gs3 4.1.1 zip?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
For which phone?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Blackcobra95:
ATT version
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] audit13:
Have you ever loaded the stock AT&T 4.3 ROM onto your phone? If you have, you cannot downgrade the bootloader because it will brick your phone.

You can find stock AT&T firmware here to downgrade: http://www.sammobile.com/firmwares/1/?model=SGH-I747&pcode=ATT#firmware
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] aenbone:
Works!

Downgraded to 4.1.1 and followed the procedure.

Tried another SIM card and the unlock code wnidow doesn't appear.

Thanks!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] wabeena68:
I too am looking for a zip file for 4.1.1 for my Galaxy 3 sgh-i747

Big thanks in advance to anyone that can help!! I have been trying for 4 days to unlock my phone to no avail. I haven't been able to get the 4.1.1 from the link provided for Samsung downloads...