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iPhone 3G : iOS 4.2.1 Problem

J

joshuamagora

macrumors newbie
Original poster
May 16, 2012
19
0
I have a problem on my iPhone that I recently upgraded to 4.2.1 . If I will downgraded it will my problem will lost ? ANSWER PLEASE :(

Note : My problem is don't have enough signal
 
Maybe. Or you could be in a low signal area.

What is your Modem Firmware version?

You might be able to downgrade to 3.1.3 and see if that helps at all.
 
Kyotoma said:
Maybe. Or you could be in a low signal area.

What is your Modem Firmware version?

You might be able to downgrade to 3.1.3 and see if that helps at all.
Click to expand...

My modem firmware is 6.15.00

I'm not in a low signal area .
 
Kyotoma said:
Oh. You need to Build a NO_BB IPSW with Redsn0w. Then put your iPhone into Pwned DFU using Redsn0w, and then Restore via iTunes. Then reJailbreak using Redsn0w. You might also need to reflash the iPad baseband.
Click to expand...

Can you tell me that step by step pls :(

----------
Kyotoma said:
Oh. You need to Build a NO_BB IPSW with Redsn0w. Then put your iPhone into Pwned DFU using Redsn0w, and then Restore via iTunes. Then reJailbreak using Redsn0w. You might also need to reflash the iPad baseband.
Click to expand...

How can I do that NO_BB IPSW ? And if I restore it again on iTunes , will iTunes say that my sim card is not supported again ? PLS ANSWER

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can anybody answer me please :(((
 
Before you start trying to jailbreak it without any prior experience (or so it sounds) why don't you try and take it to an Apple store if you have one around you and explain to a Genius the issue that you are having after you updated to iOS 4.2.1.
 
joshuamagora said:
Can you tell me that step by step pls :(
Click to expand...

Download the latest Redsn0w here.

Download iOS 4.2.1 here.

Open Redsn0w.

Click Extras.

Click Custom IPSW.

Select your iOS 4.2.1 IPSW.

Allow Redsn0w to create your new NO_BB IPSW.

Once done, on the Extras section, select Pwned DFU.

Follow the steps to put your phone into Pwned DFU.

Open iTunes.

Bypass the popup that iTunes tells your to restore your iPhone.

On a Mac: hold the Option key and click Restore in iTunes.

On a PC: hold the Shift key and click restore in iTunes

Select your new NO_BB IPSW.

Allow iTunes to restore your iPhone.

Set up as new device through iTunes and also on your iPhone.

Open Redsnow again.

Select Jailbreak.

Follow the steps to put your iPhone into DFU mode.

Allow Redsn0w to Jailbreak your device.

Select "Install Cydia" and "Install iPad Baseband".

Open Cydia on your device, search for and install Ultrasn0w. Reboot and you should be done!
 
Kyotoma said:
Download the latest Redsn0w here.

Download iOS 4.2.1 here.

Open Redsn0w.

Click Extras.

Click Custom IPSW.

Select your iOS 4.2.1 IPSW.

Allow Redsn0w to create your new NO_BB IPSW.

Once done, on the Extras section, select Pwned DFU.

Follow the steps to put your phone into Pwned DFU.

Open iTunes.

Bypass the popup that iTunes tells your to restore your iPhone.

On a Mac: hold the Option key and click Restore in iTunes.

On a PC: hold the Shift key and click restore in iTunes

Select your new NO_BB IPSW.

Allow iTunes to restore your iPhone.

Set up as new device through iTunes and also on your iPhone.

Open Redsnow again.

Select Jailbreak.

Follow the steps to put your iPhone into DFU mode.

Allow Redsn0w to Jailbreak your device.

Select "Install Cydia" and "Install iPad Baseband".

Open Cydia on your device, search for and install Ultrasn0w. Reboot and you should be done!
Click to expand...

Where i can find that NO_BB IPSW

----------
Kyotoma said:
Download the latest Redsn0w here.

Download iOS 4.2.1 here.

Open Redsn0w.

Click Extras.

Click Custom IPSW.

Select your iOS 4.2.1 IPSW.

Allow Redsn0w to create your new NO_BB IPSW.

Once done, on the Extras section, select Pwned DFU.

Follow the steps to put your phone into Pwned DFU.

Open iTunes.

Bypass the popup that iTunes tells your to restore your iPhone.

On a Mac: hold the Option key and click Restore in iTunes.

On a PC: hold the Shift key and click restore in iTunes

Select your new NO_BB IPSW.

Allow iTunes to restore your iPhone.

Set up as new device through iTunes and also on your iPhone.

Open Redsnow again.

Select Jailbreak.

Follow the steps to put your iPhone into DFU mode.

Allow Redsn0w to Jailbreak your device.

Select "Install Cydia" and "Install iPad Baseband".

Open Cydia on your device, search for and install Ultrasn0w. Reboot and you should be done!
Click to expand...

When I will download redsnow it should be save file or open with .. ?

----------

Answer me pls . :(
 
joshuamagora said:
Where i can find that NO_BB IPSW

----------



When I will download redsnow it should be save file or open with .. ?

----------

Answer me pls . :(
Click to expand...

I am not your slave. I am here to help. Not to be bossed around.

Redsn0w should create that NO_BB IPSW in the same place Redsn0w is, or it could be where the original IPSW is.

When you download Redsn0w you want to save file. Then open it.
 
Kyotoma said:
I am not your slave. I am here to help. Not to be bossed around.

Redsn0w should create that NO_BB IPSW in the same place Redsn0w is, or it could be where the original IPSW is.

When you download Redsn0w you want to save file. Then open it.
Click to expand...

Okay . Thank you so much . I will try it early tomorrow cause I can't use the computer right now . And if I do all of your instruction will my signal will back ?
 
I currently doing your instruction right now and im on the part of restoring in itunes . i have a question because i tried it before that redsn0w cant handle at the same time the cydia and the ipad baseband will it work on the latest version ?
 
Kyotoma said:
Install Cydia first. Then the iPad Baseband.
Click to expand...


Sorry , auto detection isn't supported on this iPhone 3G yet


Please specify the IPSW for the currently firmwire with the "Select IPSW" button before proceeding .

---

What will i do ?
 
Looks like you might be able to restore to stock 4.2.1 if you get it into Pwned DFU using the newer Redsn0w.

Or you might be able to use TinyUmbrella to restore to 4.2.1 by running the TSS server and selecting "Do Not upgrade baseband" and then restoring via iTunes.
 
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