if you have 3.0 beta 5 on your iphone and are happy with that , why dont you also jailbreak it

Download QuickPWN

You can get QuickPWN here on quickpwn.com. (mirror)

Fallow the easy guide at appleiphoneschool.com

CYDIA: http://apt9.yellowsn0w.com
installer: http://i.yellowsn0w.com

How to Unlock your iPhone 3G using the iPhone Dev Team’s Unlock, yellowsn0w

If your iPhone 3G is already jailbroken, jump to step 3 (you already knew that):

1. Update your iPhone 3G to 2.2 firmware via iTunes (to ensure you’ll be on baseband 02.28.00).
2. Jailbreak using QuickPwn 2.2 .
3. Launch Cydia –> click on Manage –> click on Sources –> click Edit –> click Add –> enter the following Cydia repository URL found here –> Click on Return to Cydia.
4. Click on Search. Type in “yellowsn0w”. Install yellowsn0w (it should be version 0.9.1, it was updated fairly quickly). Let it finish installing, exit Cydia.
5. Reboot your iPhone with foreign SIM installed…10 seconds later after reboot you should get a signal. If you don’t, try taking the SIM tray out then reinserting again.
6. That’s it! Your iPhone 3G is unlocked!

I installed yellowsn0w was able to pop in my du SIM card I was using in Dubai on my iPhone 2G. At first I quickly saw the “SIM Failure” message pop up then disappear quickly. The du SIM was able to pick up a signal! Success!

If you had success or some problems, let us know, but more important, let the Dev Team know by posting comments on their blog here. It’s imperative for them to get feedback in order to improve yellowsn0w to work for all carriers from around the world!

Big props to the entire iPhone Dev Team for their hard work. The entire globe is thanking them right about now!

guide from iphoneincanada.ca

firmware 2.1 is already Jailbroken, BigBoss comes up with a “Hard way” to jailbreak your iPhone 3G.

• Download the 2.1 3g firmware or 2g firmware.
• Install iTunes 8
• Update your iPhone to firmware 2.1 with iTunes and make sure it is activated
• Uninstall iTunes 8
• Uninstall Apple Mobile Device Support (From Add/Remove Programs in Control Panel)
• Install itunes v7.7. – you can find it here
• Download QuickPwn with the correct 2.1 bundle inside it here
• Run QuickPwn. Select the iPhone 3G 2.1 firmware that you downloaded in Step 1
• Select at least Cydia. You may also select Installer
• Once finished, your iPhone will reboot, which may take a few minutes. Cydia and Installer will not be visible on your springboard. Don’t panik! This is ok.
• Download TotalCommander and t-pot addon
• Install TotalCommander and in the left pane navigate to T-PoT.1.1.zip and click on it. It will install t-pot automatically
• Download the mobileinstallation patch
• Use Totalcommander to install the patched mobileinstallation file to /System/Library/PrivateFrameWorks/MobileInstallation.framework. Click on the dropdown box [-\-] top left and select network neighborhood then t-pot. Remember to back up your original mobileinstallation first!
• Still in TotalCommander delete /private/var/mobile/Library/Caches/com.apple.mobile.installation.plist
• Reboot your iPhone
• Done!

Use it at your own risks…

Thank BigBoss

Another examples how to quickly restore all Cydia applications after a full iPhone firmware upgrade or a restore.  A few preparational steps and you could save a lot of time later on.Guide taken from twiphone.com.

Guide after the jump.

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This guide is made by http://www.iclarified.com

IMPORTANT: Some 2G users have experienced problems with the latest version of WinPwn. *****FOR THE PARTITION SIZER, SET IT TO 512MB!!! IF YOU DO NOT SET IT TO SOMETHING ABOVE 500MB, IT WILL NOT WORK*****

Please keep these notes in mind…
- You MUST do a full uninstall of winpwn before installing the new version
- Make sure you have the latest version of iTunes ( Currently 7.7)
- WinPwn uses 300MB of ram at peak due to the ipsw being extracted in memory
- You must first click browse and load an IPSW to use WinPwn (i thought this was clear)
- For 2.0 only the *5A347_Restore.ipsw files are valid. The 345 image will not work
- If you see Failed to load image catalog/payload catalog, this is fine and won’t cause problems
- If you already have service with AT&T do not activate or install Youtube Fix
These are instructions on how to unlock and jailbreak your 2.0, 2G iPhone using Windows and WinPwn.

To follow this tutorial you will need to have iTunes 7.7 installed (make sure to reboot). Also, you may need to download and install .Net Framework if you are on Windows XP. Steps for this guide comes after the jump..

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All you need is a updated BossPrefs app found on Cydia. Install the latest version of BossPref and just click on “Disable Apple App Killswitch” in BossPrefs . This is the easiest way to toggle it on or off

After you have jailbroken your iPhone you need to edit your ‘/etc/hosts’ file and insert the following line:

‘127.0.0.1 iphone-services.apple.com’

This will make your iPhone not to bother looking up ‘iphone-services.apple.com’

Read The Full article HERE, Taken from http://sleepers.net

Many comments on various issues in 2.0 or 2.0.1 upgrades. Many questions have been answered numerous times. I am adding a summary of a lot of the problems and solutions in this post for reference. I can also update it over time if we need it.

Problem: Mail App crashes after my update.
Solution: This is caused by the sync of the backup from iTunes. The permissions on the mail folder are incorrect (it’s owned by root). The easiest fix is to run bossprefs, click more, and click “fix user dir permissions”. You may need to reboot.

Problem: I have AT&T or a contract carrier. I jailbroke with your guide and now I have no service.
Solution: You activated and you shouldn’t have. iTunes will activate for you but because you clicked the activate button, iTunes did not get to activate. Now your account is not validated. You need to redo the steps and not check activation on your image.

Problem: I have an unlocked 2g phone. I updated to 2.0. Now I get incorrect SIM.
Solution: You did not activate and unlock. Redo the steps and make sure you activate and unlock. In winpwn, this is “activate” and configure boot neuter on the last tab. (See my guide). On osx, this is saying “I am not legit” when asked in pwnage.

Problem: Winpwn IPSW will not complete. It just errors out.
Solution: This one is caused because the size of the image is larger than the partition space. Generally resizing the partition to 550mb solves it.

Problem: I cant restore my custom firmware. I just get error 6, 1, 2, (something low).
Solution: This has multiple causes. Generally, you are not in DFU mode. See DFU guide. Winpwn solution after ruling out the above: Delete the device file (x12220000_4_Recovery.ipsw) in your iTunes folder. (Search for the file). This can also be caused by using the incorrect firmware image (a 3g on a 2g for example).

Problem: My appstore apps are all crashing.
Solution: Sync them back on using iTunes. Should solve it. If not, uninstall them all then sync them on with iTunes.

Problem: I already restored my backup but iTunes keeps telling me I need to restore my backup.
Solution: See my post on this.

Problem: My installer has (insert problem here).
Solution: Installer 4 is not ready for use. See my post on it.  Use Cydia.

Problem: I did not install Cydia and installed only installer. I cant install Cydia or any apps now.
Solution: Redo the pwning with Cydia in the image. (Yes, start over).

Problem: Cydia just crashes when I load it. I cant get it to work at all. Cydia sucks!
Solution: Your pwnage install is corrupted. See this post on it.

Problem: In pwnage, I can’t download any of your packages.
Solution: Yes, only telesphoreo works. Skip this and install them from Cydia afterwards.

Problem: I have a 2g iPhone and need it unlocked. All the bootneuter settings are greyed out and I cant select anything. Why?
Solution: You selected a 3g firmware on your 2g iPhone. Download the correct firmware and start again.

Problem: After installing an app, I get a spinning wheel for a long time.
Solution: SpringBoard for 2.0 sucks. It may take 5-10 minutes in some cases to add a new app. There is no solution but to wait it out.  This is much worse on appstore apps once you get a load of them. See this post.

Problem: I am in DFU mode and I just get error 1604, 1602, 1601 (some 160x). I am pulling my hair out! What do I do?!
Solution: This one sucks. There’s no single answer for it. Here are some possible suggestions:

1. Validate you are using the correct firmware. You can get this if you are using an incompatible firmware (3g for 2g for example).
2. Restart your computer and try again.
3. Try another computer
4. Try switching USB ports

Uninstall and reinstall iTunes 7.7

WinPwn 2.0.0.4:

- Support for 1.1.4, 2.0, 2.0.1
- Root partition resize support
- Installer support
- Support for WinXP and Vista 32/64bit.

Notes:

- You MUST do a full uninstall of winpwn before installing the new version
- Make sure you have the latest version of iTunes ( Currently 7.7)
- WinPwn uses 300MB of ram at peak due to the ipsw being extracted in memory
- You must first click and brows and load an IPSW to use WinPwn (i thought this was clear)
- For 2.0 only the *5A347_Restore.ipsw files are valid. The 345 image will not work
- If you see Failed to load image catalog/payload catalog, this is fine and won’t cause problems
- If you already haveservic  AT&T do not activate or install Youtube Fix

Download Here:
http://rapidshare.com/files/136122744/winpwn_2.0.0.4_Setup.zip