When your iPhone is in operating mode, hold down Shift key on your keyboard for windows, and alt key on your keyboard for mac, and then click Restore button in iTunes and locate the file 'iPhone 3G. This package provides the installation files for Apple iPhone 3G (iPhone 1,2) Firmware iOS 4.2.1. How to update / restore your iPhone/iPad/iPod using the downloaded IPSW file: 1. UNLOCK iPhone 3G 4.2.1 WITHOUT BASEBAND UPDATE. It is f.cking unbelievable! The whole iPhone 3G user world waited for it and its finally done! I have just managed to UNLOCK iPhone 3G with iOS 4.2.1 WITHOUT updating the baseband! Download iOS IPSW files for iPhone 3G. All information on these pages is auto updated at least every minute. When you click on any Apple Software link on the site, you are redirected to an Apple server.

BlackDoor provides two series, first series looks like iOS 4/5/6 and second series looks like iOS 7/8.

Both series are in two versions: Normal and Unlocked.

Select BlackDoor Normal version if you can legitimately activate you device via iTunes and you don’t need carrier unlock.
If your device is factory unlocked or you are using iPhone with the official carrier that sold you the device.
All other users should choose BlackDoor Unlocked firmwares because they need carrier unlock.
BlackDoor unlocked firmware need Push Notifications patch after the installation. Recommended visit pushfix.info but you can also visit others.

If you want look on list of features BlackDoor custom iOS firmware, click here.

File name: iPhone2-1_3.1.3_7E18-BD6_Unlocked.ipsw
File size: 349.952.486 B
Root partition size: 700 MB
MD5: 05CA8031A9E4D32C202BB65CFF5F47CF
SHA-1: FDB0C42E14C61D5871464403F314EAA6860DF47D

File name: iPhone2-1_3.1.3_7E18-BD6_Normal.ipsw
File size: 349.820.177 B
Root partition size: 700 MB
MD5: 9D6DF16768E26D0387756EFE116E1BAD
SHA-1: 308A0DE0B534CBFC961BEF986E10471D291A249A

File name:
File size:
Root partition size:
MD5:
SHA-1:

Installing BlackDoor is safe
but if you want reinstall on original Apple firmware you can.

Links on original Apple firmware for iPhone 3GS:
3.0(7A341), 3.0.1(7A400), 3.1(7C144), 3.1.2(7D11)
3.1.3(7E18), 4.0(8A293), 4.0.1(8A306), 4.1(8B117)
4.2.1(8C148a), 4.3(8F190), 4.3.5(8L1), 5.0(9A334)
5.1.1(9B206), 6.0(10A403), 6.0.1(10A523), 6.1.3(10B329)
6.1.6(10B500)

If you accidentally try and upgrade your iPhone 3GS through iTunes after having previously jailbroke it, it will get stuck in recovery mode and fail to restore to the official Apple firmware bundles IPSW. You will get a whole bunch of iTunes errors like 1015.

The iPhone needs to be restored with the custom IPSW used to jailbreak the iphone in the first place.

This guide specifically deals with the iPhone 3GS, on a custom firmware of iOS 4.2.1 or 4.3.3 and an updated iPad Baseband 0f 6.15.00

What you will need is the original IPSW Image from Apple or 4.2.1 or 4.3.3

Iphone 3g Custom Restore Firmware 4.2 1 Download

A Custom Restore Image 4.3.3 IPSW if you have lost your own, one is filed here with a prefix of NO_BB so it will preserve your existing baseband.

Get the latest Redsn0w – RedSn0w — Mac is 0.9.9b7.zip and Windows is 0.9.9b7.zip

1) Make sure iTunes is not running.

1) Launch redsn0w > Browse – select the original Apple Restore Image IPSW – iPhone2,1_4.2.1 or iPhone2,1_4.3.3

2) Select your correct model according to the Serial Number – let redsn0w parse the image

3) Select only “Just enter pwned phone in DFU mode right now”

Iphone 3g Ios 4.2 1 Custom Firmware Download

Put iPhone into DFU mode using redsn0w

4) Follow the steps in redsn0w to get the iPhone 3GS into DFU mode which is going to send the screen to black

5) Launch iTunes, hold the shift/option Hp elitebook 8730w pci serial port driver. key whilst clicking on “Restore”, then navigate and choose the custom restore – either your own or the downloaded one that starts with NO_BB (which preserves the existing baseband).

Diy end grain axe throwing targets. Option/shift click restore to restore iphone from custom IPSW

6) Say a prayer

7) You should now boot up to a familiar screen, happy days!

8 ) Restore data from iTune backup.

To Re-Jailbreak

1) Launch redsn0w this time selecting the original Apple restore image – iPhone2,1_4.2.1_8C148a_Restore.ipsw, or iPhone2,1_4.3.3_8J2_Restore.ipsw and only select the option to “Install Cydia”.

2) It will need to enter DFU mode again, follow the steps and the screen goes black, and then the jailbreak process begins, unix flying bash code and running pineapples.

Pokemon soulsilver extreme randomizer nuzlocke download. 3) iPhone reboots – install ultrasn0w from Cydia to re- jailbreak the device.

Iphone 3g 4.2 1 Custom Firmware