[Q] How to unlock SAMSUNG Exhilarate(SGH-I577) for free - from a poor Chinese person - Android Q&A, Help & Troubleshooting

First of all, I'm from China, my English is not very well, maybe you can't understand what I'm saying. I'm so sorry to my college English teacher that I haven't learn hard in his class.
Now let's entering the title:
I have a SAMSUNG Exhilarate(SGH-I577 AT&T) which my sister bring back from NewYork, and I want it to use my Chinamobile SIM card, and there comes the problem. When I insert my Chinamobile SIM card into the phone, it needs me to input "sim network unlock pin" ,but I don't have this number.
First what I'm thinking is to flash a rom, but this phone model doesn't released in China, I've been searched for 2 days, and finally find it's rom in this forum, I've downloaded two roms
[ROM][OFFICIAL] CarbonRom for the Exhilarate(i577) [NIGHTLIES]
http://forum.xda-developers.com/showthread.php?t=2458690&highlight=i577
[ROM][DEV][WIP][UNOFFICIAL][SlimBean 4.3 for the Samsung i577 Exhilarate][Meticulus]
http://forum.xda-developers.com/showthread.php?t=2438192&highlight=i577
Click to expand...
Click to collapse
I've been successfully flashing both of them, but when I insert my Chinamobile SIM card, it all needs to input "sim network unlock pin" :crying:
I searched whole day to find a way to unlock this, I've tried Samsung Galaxy S Unlock Tool, it doesn't work. Someone said there is a nv_data.bin file in the system, but I haven't found it even by using ReExplorer. Then I find Samsung tool and installed in my computer, but it doesn't work, does this software need to purchase?
So anybody call tell me how to unlock my phone, Is there any expert, proficient, mybe god can help me, Can someone give me a detailed description how to do this,
you can reply to this thread or send me an email:[email protected]
I'll give you my best regard.

dragon_KO said:
First of all, I'm from China, my English is not very well, maybe you can't understand what I'm saying. I'm so sorry to my college English teacher that I haven't learn hard in his class.
Now let's entering the title:
I have a SAMSUNG Exhilarate(SGH-I577 AT&T) which my sister bring back from NewYork, and I want it to use my Chinamobile SIM card, and there comes the problem. When I insert my Chinamobile SIM card into the phone, it needs me to input "sim network unlock pin" ,but I don't have this number.
First what I'm thinking is to flash a rom, but this phone model doesn't released in China, I've been searched for 2 days, and finally find it's rom in this forum, I've downloaded two roms
I've been successfully flashing both of them, but when I insert my Chinamobile SIM card, it all needs to input "sim network unlock pin" :crying:
I searched whole day to find a way to unlock this, I've tried Samsung Galaxy S Unlock Tool, it doesn't work. Someone said there is a nv_data.bin file in the system, but I haven't found it even by using ReExplorer. Then I find Samsung tool and installed in my computer, but it doesn't work, does this software need to purchase?
So anybody call tell me how to unlock my phone, Is there any expert, proficient, mybe god can help me, Can someone give me a detailed description how to do this,
you can reply to this thread or send me an email:[email protected]
I'll give you my best regard.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=44496722
Same procedure like for i769 aka blaze 4g,you must flash 4.0.4 ics rom then uvle1 modem,after that follow
steps from page above

24458929
kew1701 said:
http://forum.xda-developers.com/showthread.php?p=44496722
Same procedure like for i769 aka blaze 4g,you must flash 4.0.4 ics rom then uvle1 modem,after that follow
steps from page above
Click to expand...
Click to collapse
Is there a link for 4.0.4 flash and uvle1 rom for model I577????

Unlock i577 with UCLD2 used in i727 and *#197328640#
ocarela said:
Is there a link for 4.0.4 flash and uvle1 rom for model I577????
Click to expand...
Click to collapse
My father always says that I keep learning from the forums and I never write anything. Well now something discovered by me. At least I believe so after browsing Internet for several hours.
I read the above recomendation of "kew1701" about flashing a modem of the t989 to the i577, and I thought: That will probably brick my i577 because the i577 is LTE and the t989 don't. It worked for the t769 because the t769 is not LTE either. And both the t989 and the t769 are for T-Mobile.
So I decided to give the try on my i577 with the modem I use to unlock the i727, the UCLD2. I assured my i577 was on ICS 4.0.4 and installed the modem with TWRP.
I originally downloaded that modem from here:
http://forum.xda-developers.com/showthread.php?t=2029650
(I thank that thread).
Followed the *#197328640# steps and it worked like a charm! Unlocked!. IMEI intact and all working. Now probably will flash back a i577 stock firmware, if I find it.
(My phone was on 4.0.4 UCLH3)
Enjoy.

Nice
Sent from my SAMSUNG-SGH-I577 using Tapatalk

Related

[I9100G] Network lock

Hello,
I received a Galaxy SII I9100G as a present last april in Morocco (I'm in France right now). They told me it was an "unlocked" phone (not bought from any operator).
The phone worked wonders with my SIM card (SFR, a french operator) from april until 2 days ago. It seems like it locked itself all of a sudden and asks me a code to unblock the network. That same SIM card worked well the same morning.
Anyone to explain what happened? I'm confused since I don't understand how it can lock itself without having to change the SIM card/flash/anything...
I called SFR and Samsung France to have the code, each one tells me to call the other.
I rooted my phone and used Galaxy S Unlock, it tells me that the phone is unlocked but after the reboot nothing happens. Tried also Galaxy S2 SIM Unlock, but it doesn't find the code.
I'm quite desperate right now since I'm waiting for some important calls this week and I tried everything, every tutorial but nothing seems to work.
I really don't know what to do to unblock it, I asked for help on many forums, spent yesterday looking for solutions but still nothing.
Please tell me there's a solution to this problem?
Thanks in advance for any help~
Samsung Galaxy SII I9100G
Version: 4.0.3 - I9100GXXLPN
PS: Actually, it does seem to work with a Meditel (moroccan operator) SIM card... Which I don't understand since it was supposed to be unlocked, hence why it worked with my SFT SIM card since april...
Hey i think some persons before you has coneckt it with a Samsung account and locked it now over the samsung dive webside. You can try to flash a new Firmeware to fix it
First, thanks for trying to help me.
I already flashed it with a new firmware (2.3.6 >> 4.0.3, always using official samsung), but still didn't work.
Unless should I go back to a previous firmware?
Any other idea please?
Moved to Q&A

HELP DESPERATELY, Which Network is the phone locked to ?

Hello,
I'm hoping someone might know the answer as this is the first i've encountered such an issue.
Bought Galaxy S2 from Canada BELL carrier. got the phone unlocked previously. been flashing different ROM and update and is using XWLPM 4.0.4 ICS.
everything was working fine till about yesterday where a "Network Lock Control Key" popped up preventing me from accessing my SIM card. I do not believe my SIM is locked as i tested the SIM to another phone and it works fine without any security password.
somehow my phone is not locked again and i tried all the different unlocked method in the Playstore and nothing worked. it almost as seems the phone re-locked itself somehow.
my question is, is there a way to find out what network the phone is locked to so if i decide to purchase a unlock code, i know that it will work properly?
Appreciate any feedback or suggestions, as i need my phone desperate.!!! :crying:
Version 4.0.4
using Stock XWLPM Kernel (rooted)
Build XWLPM
Baseband using LD3 baseband = UGLD3 <-- Bell Carrier Modem Baseband.
Thanks
Why create another thread ? You've got a related open thread a couple of posts down you could have continued to use (changed the OP & title).
my bad ,total noob move.. i felt that it was a different question so i created another post. i can delete but not sure how!! any direction would be appreciated.
Use older thread. Locked

[Q] [SOLVED] Phone locked after JB

Hi,
As I'm new to the area, sorry if I'm posting in the wrong place.
I bought a SII from UK (T-Mobile unlocked) and have been using it in Turkey. Yesterday, as JB wasn't available for T-Mobile UK yet, I downloaded 4.1.2 for Vodafone UK. After installing it, my device began asking network unlock PIN. (I should have downloaded an unbranded ROM, I learned it later.)
I rooted the phone for the first time and tried to unlock it with Galaxy Sim Unlock, but no good. I installed back the 4.0.4 for T-Mobile, but the problem continues.
Now I'm stuck with the phone. Any help, direction, lead to relevant forums would be appreciated. (The ones I searched and read was above my knowledge.)
Here is the screenshot showing the details of the phone.
What can I do without losing the IMEI, etc. information?
Thanks,
Re: [Q] Phone locked after JB
Maybe this will help you. http://forum.xda-developers.com/showthread.php?t=1894285
Verstuurd van mijn GT-I9100
Thanks, but I have to work hard to understand it. I don't have so much computer knowledge either.
Re: [Q] Phone locked after JB
atiro said:
Thanks, but I have to work hard to understand it. I don't have so much computer knowledge either.
Click to expand...
Click to collapse
"The mighty Oak was once a little nut that stood its ground."
"To err is human, to forgive is divine"
Sent from my SGS II
atiro said:
Thanks, but I have to work hard to understand it. I don't have so much computer knowledge either.
Click to expand...
Click to collapse
with basic knowledge you can't do much...
btw - did you try all unlocking apps from market??
No, just Galaxy Sim Unlock. All the time, I was reading about similar problems and when I saw about the EFS backup requirement, I stopped trying. And looked for more experienced support, here. I didn't want to mess up IMEI as it would cause lots of trouble.
Sure, it takes time to learn but if it'a phone which serves every communication, time urges. So, will keep on reading and find something.
By the way, as going back to ICS didn't help, I thought it would be better to be on JB if I could unlock the phone. Now I have this on my phone (again unrooted):
Baseband version: I9100XXLS8
Kernel version: 3.0.31-889555
[email protected]#3
...
Build Number
JZ054K.I9100XWLSJ
When I was trying to find a way to root, I saw different kernels but I couldn't understand the exact one I needed. From what I read here: "http://forum.xda-developers.com/showthread.php?t=1103399", I have to use a kernel with LSJ. Is it true?
Re: [Q] Phone locked after JB
http://forum.xda-developers.com/showthread.php?t=1846451
This should work, it's free to the xda community so be sure to thank developer.
Sent from my GT-I9100 using xda app-developers app
Re: [Q] Phone locked after JB
You flashed a branded ROM on an unbranded phone.
Sent from the little guy
atiro said:
Hi,
As I'm new to the area, sorry if I'm posting in the wrong place.
I bought a SII from UK (T-Mobile unlocked) and have been using it in Turkey. Yesterday, as JB wasn't available for T-Mobile UK yet, I downloaded 4.1.2 for Vodafone UK. After installing it, my device began asking network unlock PIN. (I should have downloaded an unbranded ROM, I learned it later.)
I rooted the phone for the first time and tried to unlock it with Galaxy Sim Unlock, but no good. I installed back the 4.0.4 for T-Mobile, but the problem continues.
Now I'm stuck with the phone. Any help, direction, lead to relevant forums would be appreciated. (The ones I searched and read was above my knowledge.)
Here is the screenshot showing the details of the phone.
What can I do without losing the IMEI, etc. information?
Thanks,
Click to expand...
Click to collapse
i went through the same ordeal! download galaxsim unlock from xda! it worked for me after trying a whole buch of other ones including galaxsim unlock 1.43. good luck!
I'm sure it was a stupid thing to do but give to the long time waiting for JB and getting another ICS. But the phone wasn't unbranded totally, I hated that T-mobile animation on every boot.
Just one thing, as I asked above, can you suggest a kernel to root. I gave the information above and I was confused with the many options to choose among. I'm not sure which one is for me.
Re: [Q] Phone locked after JB
Flash unbranded jb.
If it's still blocked get galaxysim unlock, it's free here at xda.
Sent from the little guy
Solved-thanks.
I solved the problem with the method vanisleryan suggested. I installed unbranded jb as you said. Thanks everyone.
Alright then, you can add [SOLVED] to the topic to help other users with the same issue.

[Q] Galaxy S3 Network Unlock

Hello guys,
I've tried to cut it short.
I would try all day unlock my S3 sim lock, but its failed every times. I am new in android customization so I read all things what I found, mostly the best hopes in here. So, it was an sim unlocked Galaxy S3 when I bought it, with android 4.0.4, I would like to upgrade it to 4.1.2 stock rom but it was some custom rom so its wont went automatically, I used Odin to Flash it with the stock 4.1.2 what I found here but it has the sim lock, I was tried more 4 unlocked roms but its stayed sim locked, I try all methods what I found but nothing worked, now the default IMEI changed.
Is it possible to homemade sim unlock it for free ?
(sorry for my bad english)
drastyk said:
Hello guys,
I've tried to cut it short.
I would try all day unlock my S3 sim lock, but its failed every times. I am new in android customization so I read all things what I found, mostly the best hopes in here. So, it was an sim unlocked Galaxy S3 when I bought it, with android 4.0.4, I would like to upgrade it to 4.1.2 stock rom but it was some custom rom so its wont went automatically, I used Odin to Flash it with the stock 4.1.2 what I found here but it has the sim lock, I was tried more 4 unlocked roms but its stayed sim locked, I try all methods what I found but nothing worked, now the default IMEI changed.
Is it possible to homemade sim unlock it for free ?
(sorry for my bad english)
Click to expand...
Click to collapse
what you mean by homemade sim? by right you should get sim from telco.
mike.mille said:
what you mean by homemade sim? by right you should get sim from telco.
Click to expand...
Click to collapse
I am sorry for my bad english again, I mean unlocking the sim network at home, not in the service shop.

[Q] Galaxy i9300 || Unable to Network/SIM Unlock

I have seen a number of questions that are simular to this, but I have not been abe to find one that is like mine, therefore I am posting this.
I have a Galaxy S3 International version that was bought from Digicel Jamaica. It is completely paid for, I called Digicel to ask the for a unlock code. they informed me that they do not do that and I would have to go and get it professionally unlocked. the reason I want it unlocked is that I not longer live in Jamaica, but now live in the US and would like to use the phone for the next couple of months until I can get a phone on contract.
I have tried everything I have seen on this site, including getting a unlock key. nothing works.
I upgraded the phone 4.3 sometime ago and have also rooted it in the pass.
Whenever I try the *#197328640# , after [6] Network Lock I get no menu options see .
PLEASE HELP ME :crying: :crying: :crying: :crying:
I have also tried using RegionLock Away and Galaxsim Unlock, both tell me my phone is unlocked, but I still can't use another sim in the phone.
PS. I am using a T-Mobile Sim from straight talk
You can't region unlock on 4.3 at all, sim lock is possible but only if you buy a valid code -there is no other way and your posts are identical to hundreds of others.
boomboomer said:
You can't region unlock on 4.3 at all, sim lock is possible but only if you buy a valid code -there is no other way and your posts are identical to hundreds of others.
Click to expand...
Click to collapse
I have a valid code, but the SIM unlock doesn't work with the code. I have tried everything I have seen online, downgraded to 4.1.1, replaced the stock 4.1.2 that came with the phone.... nothing works

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