I TESTED Update iPhone 4 to 4.2.1and Preserve Baseband 01.59.00 [Full Guide]

[vikassoni]

I TESTED LAST NIGHT SUCESSFULL

Update iPhone 4 to 4.2.1and Preserve Baseband 01.59.00 [Full Guide]

NOTE: This guide is meant for iPhone 4 only.

Step 1: Download the latest version of TinyUmbrella The Firmware Umbrella - TinyUmbrella

Step 2: Start TinyUmbrella, and then click on “Start TSS Server”

Step 3: Start iTunes, Connect your iPhone 4 with your computer. Click on your iOS device icon from the sidebar in iTunes. Now press and hold left “alt” (option) button on Mac, or Left “Shift” button if you are on Windows on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in the iTunes and then release this button.



This will make iTunes prompt you to select the location for your Download iOS 4.2.1 for iPhone, iPad, iPod touch [Direct Links] | Redmond Pie
iOS 4.2.1 firmware file. Select this ipsw file and click on “Open” to restore your iPhone.

Step 4: Now at some point while restoring to iOS 4.2.1, iTunes will throw 1013 error at you. This is normal, just ignore this error as the firmware has already been successfully installed on the device without the upgraded baseband.

Step 5: Now click on TinyUmbrella’s “Exit Recovery” button. Your device will now restart normally

Step 6: Now follow our complete step by step guidehttp://www.redmondpie.com/jailbreak-ios-4.2.1-untethered-iphone-ipad-ipod-touch-greenpois0n-rc5-how-to-guide/

to jailbreak your iPhone 4 untethered on iOS 4.2.1 using GreenPois0n RC5.

Step 7: Once you have jailbroken your iPhone 4, you can safely unlock it on iOS 4.2.1 (on 01.59.00 baseband) using Ultrasn0w 1.2.

SAY THANKS

[waseem147]

any one test that ?


please tell us

[Sitlay KING]

using custome fw is more save and relayable than this

[unknown26]

Yes custom firmware is great. But greenpois0n doesnt work on custom firmware 4.2.1 on the iphone 4. so this is the only way to get untethered and preserve unlock on this baseband

[dmobile1]

try it not work, all way error 1604

[gsmforever]

This will make iTunes prompt you to select the location for your Download iOS 4.2.1 for iPhone, iPad, iPod touch [Direct Links] | Redmond Pie
iOS 4.2.1 firmware file.

THE RESTORE WITH THE CUSTOM FIRMWARE 4.2.A OR WITH THE ORIGINAL ONE???

[ruwanjk]

for me its not work my iphone 4 base band is now 03.10.01 what will i do now
my start version is 4.0.1 1.59.00 went to 4.2.1 03.10.01
have SHSH s for 4.2.1 and 4.3
please help me

[birdonsky]

Originally Posted by ruwanjk

for me its not work my iphone 4 base band is now 03.10.01 what will i do now
my start version is 4.0.1 1.59.00 went to 4.2.1 03.10.01
have SHSH s for 4.2.1 and 4.3
please help me

you have made some wrong step ... no way to unlock or restore BB ,,, just wait for unlock 4.1.2 BB 3.10