Comments on: Unlock iPhone 3GS 2G Firmware 3.1.2 on Windows

By: Dr. Junaid Raza

Dr. Junaid Raza — Sat, 10 Apr 2010 06:31:37 +0000

Hi Mr. Raj.

Hows life treating you,hope things are going well on your end of the world.

I have a few questions. Let me mention the details.

1st. I got 3GS (16GB) (Factory unlocked)

2nd. Version 3.1.3(7E18)

3rd. Model (MC132AB)

4th. Modem Firmware (05.12.01)

Questions.

1st. I want to get cydia on it. I did a little research on youtube and found softwares but all say it works with old BootRoms. Now i have no idea what a bootrom is,and what was the old one.

2nd. If i use those softwares(snow breeze) to jailbrake it,will my original software that is factory unlocked deleted permenantly?

3rd. If at some point i want the original software that i currently hold(Factory unlocked) want it back,how can i get it?

4th. By jailbreaking a custom firmware is installed on the device,will it still be factory unlocked?. I travel alot so not to have a device that supports sims of all regions..

By: Prae

Prae — Tue, 23 Mar 2010 16:39:42 +0000

Tried this going from jailbroken 3.01 up to 3.1.2 and its totally screwed the phone. Can’t do anything with it now. Can get into recovery mode but iTunes just comes up with 1600 error. Tried going to std 3.1.2 ipsw but itunes says ineligbale. Help pls pls pls.

By: Manish

Manish — Tue, 16 Mar 2010 09:30:43 +0000

got iphone 3gs i got firmware 3.1.2…but in settings..it shows..that i got baseband..5.12.01….so…what should i do now

By: Unlock iPhone 3GS 2G Firmware 3.1.2 on Windows | TechnoBuzz.net | Iphone Blog

Fri, 15 Jan 2010 20:51:39 +0000

[...] out the unlocking tutorial from here: Unlock iPhone 3GS 2G Firmware 3.1.2 on Windows | TechnoBuzz.net AKPC_IDS += [...]

By: KC

KC — Fri, 01 Jan 2010 11:20:06 +0000

I have an iphone with firmware 2.2 and it was jailbreaked. How can I upgrade to firmware 3.12. If I upgrade to 3.12 with itune, will it affect the jailbreak, if so how can I unlock the iphone again.
Thanks

By: Asmart

Asmart — Sun, 20 Dec 2009 15:12:05 +0000

Excellent !! I really appreciate your hard work. I was using 3gs 3.0 with baseband 4.26, not I got 3.1.2 jailbroke and unlocked with baseband still in 4.26, works perfect.

PS. after you jailbreak it, you must run ultrasn0w to unlock it in order to get the phone service, otherwise, it will only works like an iPod.

By: thomaar

thomaar — Sun, 13 Dec 2009 03:58:52 +0000

No matter how many ways or times I try to Jailbreak/Unlock my brand new Iphone 3GS, I get the msg “Different SIM detected: Please connect to ITunes” when I put my TMobile SIM in. Here’s the steps:

1. I used blackrain per the instructions without ITunes running. I hit make it rain. Everything looks good like its down loading.
2. I enable my wireless on the phone and launch the blackrain icon on my phone. I install both Cydia and snow. Everything appears to install ok
3. I swap my ATT sim with my TMobile sim and get the above error msg. I can make and receive calls with the TMobile sim in. The weird thing is when I receive a call, it is as if my contacts are loaded because the persons name appears that is calling me. It also recognizes that it is a TMobile sim by the Tmobile at the top left hand corner of the phone.
4. The extra things I have done to try to make it work.
a. Restore the iphone using ITunes then started the process all over again.
b. Repeated the process with 3G enabled and disabled
c. Tried to install Blackrain with either the Sim cards (Tmobile or At&T) and with none
d. After install of snow & cydia with At&t sim, removed Sim, did reboot then installed Tmobile sim

Here are the particulars on my phone: Version 3.1.2 (7D11); s/n 32946 (1st 5 #s); model MC123LL; firmwre: 05.11.07

I am doing this all from a Windows 7 machine

By: shinbo

shinbo — Mon, 09 Nov 2009 17:45:30 +0000

You guys gotta stop using rapidshare… its a piece of shit and now only premium members can download it.

By: enal

enal — Tue, 03 Nov 2009 09:23:56 +0000

I have an iPhone 3GS that is already Factory Unlocked.
(I bought it from SingTel. The Singapore government’s rule that all iPhone sold in Singapore must be factory unlocked)

It is now in 3.0 firmware, If in the future I want to upgrade it to 3.1, will it affect the Factory Unlock?? since they said that the baseband will permanently changed. (because I’m using another simcard -not from singtel-)

Or the upgrade just will affect the iPhone that with Software Unlock (not Factory Unlock)

Thank you for your helpful information!

By: Bako

Bako — Sat, 31 Oct 2009 14:34:40 +0000

U R The 1!!!!!
Thanks alot man it Works!
i was using AT&T Unlocked 32 gb 3GS
with a 3.0 firmware & 4.26.08 modem,
i just followed what u explained and everthing is working fine.
I unlocked it with no problem and i can still use
my turkish simcard and my modem firmware is
still the same.
Thanks again