>If you have seen a performance deterioration and want to downgrade your iPhone 3G to the previous version then this this tutorial lwill take you through the step-by-step process to downgrade from iOS 4 to iPhone OS 3.1.3
Step 1: Download iPhone OS 3.1.3
click here to download
Save a copy of this iOS firmware on your computer desktop
Step 2 : Download RecBoot
Download this tool by click here and save it to your computer desktop.
Step 3 : Set iPhone To DFU Mode
(a) Plug your iPhone to the computer
(b) Switch OFF the iPhone by pressing the Sleep/Wake button. Swipe across the ‘Slide to Power Off‘ option to turn your iPhone off
(c) press the power button for 2 second (apple logo appears), press and hold the iPhone Home button for ten seconds (screen goes black).
(d) You can now release the Sleep/Wake button while the Home button is kept in the pressed state (till pc sounds for hardware connection).
(e) now relese the home button.
Step 4: Restore iPhone 3G using iPhone OS 3.1.3 firmware
open itunes and select shift+restore and let the process run.
iTunes might throw 1011, 1013 or 1015 error as seen below. You don’t have to panic. It’s normal, just ignore this error as the firmware has been successfully installed on your iPhone 3G. You need to use RecBoot utility to exit out of recovery mode.
You may require .NET 4.0 firmware for the application (
to work.Click here to download Microsoft .NET 4 firmware.
Thats it you are now on ios 3.1.3 that runs as smooth as silk ………
for any problem contact through comments………..
Connect your iDevice to the iTunes 10.1 and restore iOS 4.2.1/4.1.(how?)
Once your iPhone is running iOS 4.2.1/4.1, execute the downloaded RedSn0w 0.9.6b5.
Hit the Browse button and select the downloaded iOS 4.2.1/4.1 firmware. RedSn0w will recognize the firmware, now hit the Next button.
Select Install Cydia and Install iPad Baseband options. This will add Cydia to iOS 4.2.1 and replace iOS 4.2.1 baseband with iPad 3.2.2 baseband 06.15.00. Hit Yes if you want to update baseband to unlock iPhone.
RedSn0w will ask you to turn off your device. When it’s off and plugged in, hit the next button.
Now you’ll be instructed to put your device into DFU Mode. Follow the on screen instructions.
Once your device goes into DFU mode, RedSn0w will start jailbreaking it. Once done, you can find the Cydia icon on your iPhone
That’s it. You’ve successfully jailbreak iOS 4.2.1/4.1 on iPhone 3G and now have baseband 06.15.00
>This is really cool if u have an iphone and ntc service(in nepal) then you can enjoy free unlimited facebook
just follow these simple steps to do it :::::
1. download the free facebook app in the itune app store from ur pc or ur iphone(needs internet)
2. Now go to setting>general>network>and do this
a. switch off 3g
b. turn on cellular data
c. enter to cellular data network & delet any setting if present (leave all field empty)
4. You are all set to run the facebook app from your spring boad ….
THATS IT ………….
Note:- if it does not work use “ntmms’ as APN rest leave as it is
plz comment and let me know if it works i may help solving the problem…