yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab General] abuser0815:
:eek:

let me guess, you are looking for in decimal offset????

then you have to go to locations 01578089 and 01578254. rotos locations are postet in hex, thats the reason you´ll not find it.

be very carful with this file. i hope you have a backup from your phone.
[Galaxy Tab General] Shane.Spina:
Hi guys from Kalgoorlie :)

OK...

I have read almost ALL of this thread (its getting rather long...) and i havent found anyone with my particular situation..

I have a completely unlocked galaxy tab (used the codes listed in another thread to see this for sure) and it was purchased from a telco called Telstra.. I have put another carriers SIM card into the device and set up the APN.. Now i can get SMS, Phone calls and 2G internet ONLY.. no 3G nor HSDPA..

When i select UMTS only in the Network mode and then browse for Network Operators the only operator that lists is Telstra.. To further my investigations i have a Samsung i9000 as well that is carrier unlocked but bought from another carrier called Optus.. I changed the Network Settings to UMTS only on that phone using the SIM and browsed for Network Operators and it only shows Optus in the list..

Now, having read this thread a few times i have downloaded Z4Root onto the Tab and applied temporary root and got a Hex editor and i cannot find the 2 values Roto listed either.. (I do know Hex offsetting plus searched for the decimal offset as well). I am wondering if they exist in a non carrier locked tab? I am presently installing ADB on my laptop as I type this but i must admit i am loathe to run the script as i cant find the values represented in the script in the nv_data.bin.

ok from here I am at a loss anyone got an idea? I am moving to the US in 3 months so i really want this fixed b4 i leave or the Tab becomes a rather expensive WIFI device lol..

Oh one other thing i found.. I was reading a Samsung i9000 forum and found a thread on unlocking tha device and found some codes that allow access to the dubugging menus.. seems that only 850 Mhz was enabled not the 900 Mhz band that Optus uses.. Does this illuminate anything?

Cheers and TIA guys
[Galaxy Tab General] foilole:
US Samsung Galaxy Tab for use in Europe

Funny...I have a similar situation. So...after extensive research on unlocking an American Samsung tab for use in Europe....My findings were that you can buy the tablet here in the US and have it unlocked by any 3rd party vendor or follow the site I provided below. T-Mobile will not unlock your device. You will also need to DL the European firmware:

P1000XXJH3

I’ve had several conversations with SG Tab users who have successfully done this.

Go to GalaxyTabNews to unlock ( i cant post links here)

I personally have not tried, but will know for sure by the end of this week and will update this blog. I hope this information helps as I have spend countless hours trying to research, hopefully you wont have to.
[Galaxy Tab General] abuser0815:
don't do it the way from galaxytabnews. i did it and yes it works. But it fu. up your tab with the serial number.

do it the way roto showed in the first thread and you will be save.
[Galaxy Tab General] olegmamaev:
OK, finally solved the problem - my T-mobile is unlocked now and works just fine on 3G in Russia :-).... Locations 0181462 and 0181507 are the ones to be modified, at least, in my device. Looks like I just didn't save changes on exiting hex editor at hte first atempt
[Galaxy Tab General] rotohammer:
Stop right there! You may have read almost all this thread, but you surely don't understand any of it. Why are you even reading a thread on carrier unlocking when you own an unlocked phone?
[Galaxy Tab General] rotohammer:
I personally hope no one follows this advice.
[Galaxy Tab General] Shane.Spina:
It appears, in Australia anyway, that Android 2.1 and 2.2 phones seem to have SOME sort of carrier lock.. i tried an unlocked HTC Wildfire and had the same problem.. I work for Telstra so i have access to the entire product range.. On even outright purchased phones there is SOME sort of lock on the radio frequencies.. as i explained in my earlier post Telstra uses 850Mhz and Optus uses 900Mhz.. to add further muddle to the mix i have a IDEOS by Hueweii.. completely carrier inspecific bought from a non telco phone shop.. I have applied Z4Root and used a root explorer and the EFS folder doesn't exist on that phone.. annd obviously picks up all networks.. Got any ideas Roto as to my next move? have done nothing atm other than applying temporary root and examining the bin file
[Galaxy Tab General] rotohammer:
Not being able to use a frequency is not a carrier lock. Its either done in harware or via the modem file. Stop using the word lock, you're confusing yourself. I'm not even sure what phone you're talking about in this post.
[Galaxy Tab General] Shane.Spina:
Thought I'd respond from here to alleviate any confusion as to the device lol.. Ok seems I have some crossed wires, should I take my enquiries to a different thread? Or could someone point me in the right direction please?
[Galaxy Tab General] rotohammer:
Your Tab has the internal hardware for 850mhz only, not 900mhz. Since your i9000 is from a carrier that uses 900mhz, it makes sense that it gets 3G on 900mhz.

Regardless of all your frequency issues in Australia, in the US, AT&T uses 850mhz, so your Tab will work with 3G, your i9000 will not.

Theres no carrier lock to unlock, you are experiencing the effect known as "using one carriers phone on another carriers network and not getting 3G" which is normal when your carriers uses different frequencies for their 3G service and Samsung makes different hardware for each carrier, rather than one universal hardware capable of all frequencies.

Theres nothing you can do to "fix" your problem, that wont exist in the US anyway, unless you choose T-Mobile for service, then you're back to no 3G again (different carrier, different frequencies and hardware, sound familiar?).
[Galaxy Tab General] docangle:
T-Mobile USA Tab Can't get unlock working.

I followed the directions on the easy method on OP's and when it restarts it is asking for an unlock code. I have the backup files on the SDCARD that I backed up after my first attempt, but can't seem to get it working.

I have a couple of questions:

1. Does an Activated T-Mobile SIM have to be installed first?

2. Does the device need to be in Airplane Mode or out?

3. Should I have my AT&T SIM installed first?

4. I do have the device in 'Debug' and I can successfully obtain root (su permissions '#' not '$')?

The model I have is the SGH-T849. with stock launcher and an running Z4 Root with the latest Busybox (via Busybox installer)

Thanks in advance for any advice you guys can give.
[Galaxy Tab General] rotohammer:
1 2 & 3 don't matter, 4 is good. Since you seem to know what you're doing, fire up the hex editor from the market and see what you've got. I'm sure there's a reason its not working. Perhaps there was an error running the commands?
[Galaxy Tab General] Shane.Spina:
Telstra also uses the 900Mhz network as well.. 850Mhz is only used for "NextG" service, a higher speed network than the HSDPA available on 900Mhz.. i find it difficult to swallow that samsung would supply a device that only does data on 850Mhz.. considering that Telstra does and can use 850Mhz or 900Mhz..

Thanks anyway for trying to help.. I am going to try flashing with the generic european ROM and see what happens once i can locate the Telstra Branded ROM as i have similar problems with Android based HTC handsets but not WinMob HTC handsets (can access 900Mhz on HTC Mozart but not on Wildfire or Desire handsets). I think you are probably right Roto that there is some sort of Modem file that restricts the Tab and other Android devices but have no idea where or how to find it..

Again thanks for the help Roto
[Galaxy Tab General] Magaboo:
Thank you

Did the HEX editing as per rotohammer instructions on page 1. Worked like a charm :-).

Many thanks rotohammer and happy holiday season wishes from Canada.
[Galaxy Tab General] da_enlightener:
Dear Rotohammer

Wish you a very Merry Christmas and happy holidays.

Thanks to your adb shell script, I was able to unlock a bell galaxy tab. I have tried the steps previously on my rogers tab, but it didnt work. After some troubleshooting I was able to understand what was missing...i did'nt have busybox installed.

I used z4root on both tablets, and from what I read, I understood that z4root automatically installs busybox. So I was relying on that busybox installation. Wrong!

I had to install busybox again from marketplace, then I copy pasted ur script into adb shell....and just like ur post promised...viola! My bell tab was unlocked and is being used on rogers!

Thank you rotohammer for ur help and hardwork. You have no idea how much it is appreciated.

You made my day! :)
[Galaxy Tab General] T33H00:
;)I used ADB commands to unlock the Galaxy Tab.

Thanks a lot, Roto.

I even paid in full for the Galaxy Tab with prepaid internet plan for Tmobile. when I called in and ask them for the unlock code. They asked me a lot of question like receipt and ... and need it fax to them. I was mad and decided to follow this instruction though that I never need them for the unlock code any more.
[Galaxy Tab General] BlueBagodah:
Mucho Thanks to RotoHammer for the Unlock instructions, and Maxtcee for his helpful post!

I'm now running my Rooted, Flashed, and Unlocked Galaxy Tab(originally a Bell Unit), on Rogers! Sweet!
[Galaxy Tab General] ruba_baby:
hey im new on here but i wanted to buy the galaxy tab sprint company and umm i need it unlocked because im traveling to saudi arabia please if there is away that doesnt cost alot
[Galaxy Tab General] kevinsneel:
Sprint, like Verizon, uses cdma and evdo; no sim card. They are incompatible with most of the world, which uses sim card with gsm/edge/hs*pa. If you rant to buy a US tab for travel, at&t and t-mobile are your choices. I chose at&t (writing from egypt with that right now) because its frequencies match up better with several countries and because I prefer at&t's data plan in the us.
[Galaxy Tab General] dbudny:
I just followed your instructions for my AT&T Tab and it worked flawlessly. Thanks! With the addition of the Euro-Rom, I now have the worlds biggest phone!:)
[Galaxy Tab General] vampire01:
Hi Roto,

I followed your instruction to unlock my ATT tab using adb shell command, but I waited more than 45 second, the tab did not reboot itself. Please see the attached the command processing. It just stopped at ######. I tried to manually reboot, and use T-mobile sim, but just got Edge signal and cannot access to web. I tried to edit the apn setting, but I cannot since the setting is fix for epc.tmobile. I do not know what I did wrong. Pls advice. Many thanks :o
[Galaxy Tab General] rotohammer:
Actually, it looks ok. Could you make that image any smaller ? :) perhaps you just didn't get the last carriage return in there when you pasted the script. Just shutdown the tab, insert a different carriers SIM and power it back up.
[Galaxy Tab General] vampire01:
Sorry for the attached :'>. I was in frustration thinking I did something wrong with the command and the original file is too big. I actually resized it 4 times. What do you mean by "didn't get the last carriage return in there when you pasted the script"? Is it that I have to enter after I paste your script? When I pasted it, automatically there was processing going on. I did not have to wait just 1 sec. Or did you mean I have to enter after ######?

The T-mobile Sim I have now is the only one from different carrier besides the ATT original. I just bought this 250MB data prepaid SIM for T-mob tab from T-mobile shop in order to test this. But I still cannot access the net :(
[Galaxy Tab General] zenlakin:
A question I have is if I buy a Tab and I am currently with TMO will I be able to just swap my SIM card from my phone to the Tab and be up and running?
[Galaxy Tab General] rotohammer:
Not a chance. Theres a lot of work you need to do, keep reading.
[Galaxy Tab General] rotohammer:
"Accessing the net" is not something you can fix by SIM unlocking the Tab. All this procedure does is to allow you to boot the Tab with a different carriers SIM card installed and bypass the lock screen that would prevent you from even using the T-Mobile SIM.

Before you do anything else, you need to describe what you can and can't do with clarity.

If you insert the T-Mobile SIM card and then turn on the Tab, does it boot to the home screen or a black screen that prompts you for an unlock code?
[Galaxy Tab General] raaleck:
Hi Folks, I just downloaded the Android SDK files on computer and the Busy Box on my rooted G-Tab i'm running the command "adb shell" and gets a $ symbol beside a # one.

I pasted the script and some process run but it ends and says: Operation not Permitted!

What I'm doing wrong?
[Galaxy Tab General] abuser0815:
You have to confirm superuserrights on your tab when running adb commands.

Just have a look on your tab after you started.
[Galaxy Tab General] T33H00:
When I unlocked my tab with ADB commands, I stil have my IMEI number but not Serial number?

Is this normal?
[Galaxy Tab General] rotohammer:
No its not normal, and you're the second person to report that. Luckily you should have a backup file in /sdcard named nv_data.bin.orig which we can use to redo the process. Theres no harm in the situation you have at the moment, but I would prefer if everything is perfect.

I wont be able to work on it immediately as I may be away for the new years holiday. I'll pm you when I'm ready to run some tests as Id like to make sure it works for you first.
[Galaxy Tab General] abuser0815:
Hi, I reported the same in this thread.

here you have my post with the solution in or just go to this posts:

http://xdaforums.com/showpost.php?p=9929910&postcount=204

I can help you also out, just pm me and a bit patience :)
[Galaxy Tab General] tbela:
SGT from T-Mobile hungary successfully unlocked with this method. THX!
[Galaxy Tab General] sclui56:
Hi Roto, I also used the ADB script to unlock a stock (only unrooted via 1-Click) AT&T Tab, when I saw one of the users mentioned the blank serial #, I went & looked. Sure enough, I had the correct IMEI but blank s/n. It was restored back using the backup YOU made in the script. Thanks.

Thought I would report in as well.
[Galaxy Tab General] abuser0815:
yeah, for sure you got it back, but is your tab now unlocked? i guess not.

i would like to know, what tool you used to get the lock off. obviously it was not rotohammers method from the first post, because this doesn´t harm the serialnumber.

look to my post on the page before and you will find the locations were serialnumber is in....
[Galaxy Tab General] kevinsneel:
I'll be darned; it happened to me too (used Roto's script to unlock at&t tab). I didn't notice until I saw these reports.
[Galaxy Tab General] raaleck:
Yeah I installed BusyBox and it has the Superuser permission. Anyways I will try once again and will get back with results!
[Galaxy Tab General] abuser0815:
This has nothing to do with the busybox rights. On several adb commands the tab will ask again for superuserrights.

Or you make temporary root shell with onclick.
[Galaxy Tab General] raaleck:
I permanently rooted it with z4root. I'm attaching a screenshot of the command window so you can see what specific if the problem I'm having.
[Galaxy Tab General] tbela:
Dear Roto!

I think I discovered, why your script eliminates the serial number.

The problem is the "echo -en \\x00 > out0" command. The -en switch combination does not work here (I do not know why...)

I suppose with this command you wanted to create a file, which contains a single 0 valued byte, and nothing else. The result is different: out0 is 9 byte long, and contains "-en \x00" string. (Hex 2D 65 6E 20 5C 78 30 30 0A) As you concatenate the "outn" files, the result is 16 byte longer, than the original nv_data.bin, therefore the serial number shifts from 0x1880F6 to 0x188106. Thats why the SGT unable to read it from its original place.
[Galaxy Tab General] raaleck:
Ok I enter on Root Explorer and mark other persmissions on the nv_data.bin for example and I see some process but ends saying once again: Operation not permited.

I will appreciate if you could give me short step by step process to see at what point I'm getting stocked!
[Galaxy Tab General] raaleck:
THANKS "Roto" & "Abuser",

I just forget that I need to "re-comfirm" superuserrights and I was letting my Tab screen getting off so I didn't see it requesting me permission.

This is JUST AWESOME!!! All of you Rocks!
[Galaxy Tab General] rotohammer:
Köszönöm! Indeed, I forget that the android tools aren't always 100% compatible with the desktop versions they aim to replicate.
[Galaxy Tab General] knotinabox:
bell unlock

Thanks everyone for an easy unlock on my bell tab.

worked flawlessly and is running on a telus sim

Rooted using z4root

installed BusyBox

Backed up /efs using Super Manager

installed HexEditor

Made copy of nv_data.bin

changed 00181462 from 01 to 00

then deleted nv_data.bin and the nv_data.bin.md5

then replaced with new nv_data.bin

Thanks again

Knotinabox
[Galaxy Tab General] cromed:
works 5*

Perfectly worked with Vodafone Portugal(Galaxy Tab).

Thank you VERYYYYYYY MUCH!!!!!!!!!!!!!!!!!!!!!!
[Galaxy Tab General] KOBIAZ:
helpppppp

hi

i thing im asking allitel question but i present 1000 peopole at least!!

pleas someone make one by one step how to unlock t mobile t 849 tab

but give us all instractiones wher to download and how to install.

i haveread all the post and its look like peopole are sume that evrybody know what theyar talking about like this: well i and many dont eve know wherto install

the root explorer, on computer? on the tab? and how to do all the rest??

so pleas if someone can help us on the big problem??

"root" it first - z4root ( permanently root done )

buy/install rootExplorier ( i tried to do copy the folder but it's not coping any components or the folder it self,( do i need to backup the efs folder to the root folder or to the SD memory and how is that can be done?

backup /efs ( i stuck her because i need Hex editor.apk , could some body help me in that because im not able to connect to market )

copy nv_data.bin to safe place

edit as per suggestions - this is only one byte I have changed:

0x181469 change this one byte from 01 to 00

mount / in rw

put the nv_data.bin into /efs

delete nv_data.bin.md5

reboot

define AP

reboot again

got a gmail !!!ut......
[Galaxy Tab General] KOBIAZ:
help

godddd can someone explaine how to "open shel on my computer? do i need anyprogram?? pleas
[Galaxy Tab General] :
Thanks for the description. I've managed to root the device, backup the /efs, edit the .bin file, reboot...
[Galaxy Tab General] MecoMan:
Very Thanks Rotohammer!
[Galaxy Tab General] defconjuan:
Absolutely Works on US AT&T SGH-i987

I tried this on 6 Jan 2011 on a Samsung Galaxy Tab SGH-i987 purchased from AT&T on 26 Dec 2010. Worked perfectly first time through and now using a European GPRS enabled SIM for net. Tab is now rooted and unlocked.

Perhaps the directions could be expanded for n00bs but this was enough for me because I != n00b. For example people will need to sideload z4root (google "AT&T : How Do I Side Load Applications On My AT&T SGH-I987 Samsung GALAXY Tab Using The Andr Debugging Bridge (ADB)?").
[Galaxy Tab General] skurbina:
thaaannkkss

worked like a charm! props! easy as abc! ;) at&t tab unlocked
[Galaxy Tab General] skurbina:
go to the directory where adb.exe is with cmd and type adb shell and hit enter
[Galaxy Tab General] MecoMan:
With the second method, I have this problem that I am doing wrong?

Help please.
[Galaxy Tab General] madfenris:
Hex Edit was plain and easy, thanks for the fix. Bell Tab now running on Telus
[Galaxy Tab General] pakalrtb:
Last night out of nowhere my tab lost the unlock :eek: . I guess it soft reset itself and restored the nv.data.bin file from the .bak one :confused: . Strange enough this was the only setting that got restored to its original state, everything else on the phone was working fine . Well, I had to redo the unlock procedure and voila' I am on the phone again :D:D:D
[Galaxy Tab General] Maxrunner:
Will this work with a Euro Galaxy tab locked to the TMN carrier?is there any simple process to do this?
[Galaxy Tab General] Maxrunner:
I also have a doubt, if i unlock it will i be able to update with samsung kies? because right now im with the firmware p1000xwjj3 and it seems i cant update further...
[Galaxy Tab General] pakalrtb:
It's very simple if you know what you are doing :D . It's really just a matter of changing one 1 to a 0. But you will need to Root your phone first - back up and edit/delete a couple of files. But those files are very delicate and if you mess with them without a proper back up you will end up having a software non functioning tab (at least for the phone part ) .

The unlock will have nothing to do with the possibility of upgrading your tab with Kies.
[Galaxy Tab General] Maxrunner:
thats the thing. I have the p1000xwjj3 firmware and i cant update further with kies.
[Galaxy Tab General] pakalrtb:
One thing is the official path with Kies ( and you are on the latest official firmware ) and it's the procedure that anyone with no experience should use, another one is the one with Odin/Heimdall that will allow you to flash your tab with official BUT NOT PUBLICLY RELEASED leaked version of the firmware. Again you should know what to flash and what not or you will risk to brick your tab.
[Galaxy Tab General] Chonchord:
No nv_data.bin File

I got a Bell Tab at full price on a recent trip during holidays to Canada which I assumed would be open. Turned out it's locked to Bell and I didn't even get antenna bars in Dubai. I rooted the device with SuperOneClick, installed BusyBox & TitaniumBackup, then flashed it with the European ROM. Up till this point it worked fine, although it took me a few days to realise why it wasn't working to begin with. I get the cell antenna bars now, and the dialer app too.

Anyway, I still can't get the SIM to work as it asks for the Network Lock key when I start the device. I tried looking for the nv_data.bin file but I can't find it anywhere. The efs directory is empty and a search shows that the only .bin files are in the system folder and its subdirectories.

Any ideas are much appreciated.
[Galaxy Tab General] mypcpal:
I have sucessfuly change the firmware of my Samsung tab USA T-mobile T849 to P1000. Now, T-Mobile gave me an unlock code and is not working. Can you help me pls.
[Galaxy Tab General] Lucky_Charms:
Rotohammer,

This might have already been answered but the thread is getting too long to look through. When using the easier adb shell method on my t-mobile tab, do i need to get an unlock code from t-mobile first or will that script take care of everything?
[Galaxy Tab General] lezt:
Knotinabox,

Can you help me with a more detailed instruction,

I also have a bell galaxy tab, and have rooted the phone with z4tools, installed busy box, and super manager.

now, i am lost. how do i backup the /ef (or what is the /ef?), and do you hex edit on the phone of on the computer?

A detailed procedure will be much appreciated.

Thanks
[Galaxy Tab General] Chonchord:
So, does anyone know how I should go about this please? Bell Galaxy Tab, purchased full-price (no plan) at BestBuy in Canada. Taken to Dubai, rooted with SuperOneClick, flashed with European firmware. When inserting Middle East Vodafone SIM card I get the NetWork Unlock Key dialog and when I press Dismiss I cannot access mobile network. There's no nv_data.bin anywhere in the system but oddly, there's a nv_data.bak in /sdcard . Any ideas how I should proceed? I called Bell Canada who said their Tabs are not locked to Bell and they can only support if activated with Bell SIMs. I called Samsung Canada who said I should contact Vodafone here. Is that how I can unlock this thing? When I pop the same SIM card in a regular mobile phone, it works fine without asking for Network Lock Key.