Comments on: How to unlock iOS 4.2.1 on iPhone 3G and iPhone 3GS with ultrasn0w

By: t10

t10 — Mon, 22 Oct 2012 05:05:41 +0000

I got a iphone 3G it was unlock with firmware 3.1
But i want to update 4.2.1.At first i update then unlock it is ok?how can i understand baseband number.please help me.

By: Lydia

Lydia — Sat, 20 Oct 2012 11:57:35 +0000

thanks a lot.. now I can use my Iphone..after unlock by ultrasn0w..
actually I almost give up when try to unlock my 3g by using yellowsn0w..

once again thankyou

By: Oso

Oso — Fri, 17 Aug 2012 04:51:53 +0000

I have 3G 4.2.1 and modem firmware 5.15.04 I tried upgrading to ipad baseband and not everything seemed to go well but where can I check to see if my baseband is upgraded to ipad?

By: ttssokuns

ttssokuns — Tue, 07 Aug 2012 03:19:26 +0000

i have iphone 3g wtih 4.2.1. any gsm sim couldn’t be call out going except aircel gsm sim. what the problem???????

By: ieee488

ieee488 — Sat, 23 Jun 2012 23:20:39 +0000

Okay, I got my iPhone 3G working enough to make phone calls.

I re-installed ultrasn0w via Cydia.

Re-booted and put in my T-mobile SIM which was then recognized.

However, I can’t get the internet portion to work. The iPhone should be able to work on T-mobile’s EDGE network which is much slower than 3G, but no internet.

By: ieee488

ieee488 — Sat, 23 Jun 2012 13:43:43 +0000

No, I never got my iPhone working.

I have two T-mobile SIM cards – one for prepaid phone only and one for the unlimited 4G service for my smartphone.

Neither worked.

iPhone reports No Carrier

By: Derik

Derik — Tue, 19 Jun 2012 17:37:43 +0000

Did you ever get you iphone working? I am having the same issue…

By: ieee488

ieee488 — Sun, 17 Jun 2012 15:37:20 +0000

Achim,

I have the same problem.

I have 4.2.1 and 06.15.00 on my iPhone 3G, and I inserted my T-mobile SIM card, and the SIM is not recognized.

By: mir

mir — Sun, 10 Jun 2012 19:27:59 +0000

go to place whr wi fi is availbl and install ultrasn0w..

By: Rajesh D

Rajesh D — Sun, 27 May 2012 04:48:28 +0000

Thanks for or all the help…. I successfully unlock my IP 3g can now use my mobile sim… Thanks for the entire team

By: Achim

Achim — Thu, 05 Apr 2012 03:02:12 +0000

I did the UltraSn0w and it still says “No SIM” when I try to use my t mobile sim card

By: Achim

Achim — Thu, 05 Apr 2012 02:36:55 +0000

SO I DID EVERYTHING WITH ULTRASN0W AND MY IPHONE JUST SAYS “No SIM” whenever I try to put in my T-Mobile SIM card in it. Anyone know why this happens? I toook my T-Mobile SIM out of my blackberry and tried to put it in my “unlocked” iphone and it does not work I have 4.2.1 and 06.15.00

By: Robby

Robby — Tue, 27 Mar 2012 14:37:14 +0000

Hi, I have an iPhone 3g 8GB with 4.2.1 and 06.15.00 bb and it is not JB. Can I JB it and then unlock my phone to read the SIM(carrier) ?

By: Kurin

Kurin — Sat, 10 Mar 2012 17:30:35 +0000

Hi, i have jailbreak 3g for 4.2.1 bb 5.13.04 using redsn0w and it works great but have problem with carrier. i have installed ultrasn0w but still cannot recognized my sim. the same sim when i used 3.1.3 i dont’ really remember coz i just decided to click update on itunes and turns out everything is lost. everything works perfectly except the carrier. i tried to update the baseband using redsn0w. but redsn0w just exit out when i checked the bb and trying to reboot. but it exit leaving my iphone unable to switch on. so i do it again without bb checked but i still have no network list. please can you help?

By: bhim

bhim — Sat, 03 Mar 2012 10:43:59 +0000

I have the same set iPhone 3G with ios 3.0 BB 04..26.08, but already unlocked by someone. I’m using it in Nepal with different carrier. it’s ok but how can I upgrade it to ios 4.2.1. I am confused by the posts which I read. Please help me stepwise in this & obliged