what is the deal with jailbreaking & unlocking a 3G??

[lopro]

Hi,

I've previously owned a 2G, which I used PwnageTool to jailbreak and unlock. No problems. Whenever a new firmware version comes out, I wait for the new PwnageTool and update my phone then restore via iTunes.

Now...I want to buy a 3G. What should I use to jailbreak and unlock? ALSO, is there any 3G that I should not buy. It seems like there are some issues with 3G phones with firmware 2.2.1? Is jailbreaking and unlocking more limited on the 3G?

I use T-mobile and Mac OSX10.5.6.

[HackThatPhone]

I have all the Mac guides you need start reading. Any 3G with 2.2.1 and the matching baseband 2.30 will not unlock. You'll have to buy one of those *SIMs to do it and I don't cover that in my guides.

[lopro]

So if I wanna buy a 3G, all I have to do is make sure the firmware is 2.2 or lower and I'm okay? If not that, then the baseband has to be lower than 2.30?

[JFrappuccino]

So if I wanna buy a 3G, all I have to do is make sure the firmware is 2.2 or lower and I'm okay? If not that, then the baseband has to be lower than 2.30?
The firmware and baseband will always correlate, just make sure you get 2.2 or lower and you should be set.

[kalila]

Iphone 3G unlock(Downloads and Jailbreak)
iPhone 3G - Downloads
Download the 2.2.1 firmware file from here

Windows users: Quickpwn 2.2.5 Download here

Windows users: iTunes 8.0 Download here

Windows users: .NET Framework version 2.0 Download here

iPhone 3G - Jailbreak 2.2.1

Notes?
1?Before beginning: You must have iTunes 8 installed and you must be on firmware 2.1, if you are not, be sure to update via iTunes.
Also make sure to go into the task manager and disable ANYTHING Apple or iTunes related.
2. WindowsXP user must download the NET Framework version 2.0 ?Click to download?
3. WindowsXP user should be sure" Control Panel " ?> " Administrative Tools " ?> "?elnet ,messenger ,terminal services" (Be sure three services are turned on)

4.Download Firmware 2.2.1 (3G) ?Click to download?




Step 1

Make a folder on your desktop & name it Pwnage.Download the Firmware 2.2.1 & Pwnage tool 2.2.5 & place them in Pwnage folder you just created on your desktop:Unzip/Unrar the QuickPwn2.2.5-2.zip file inside the Pwnage folder.

Step 2

Launch iTunes and connect your iPhone 3G to the computer via USB cable.

Select your iPhone from the list of devices on the left side navigation bar. Now hold down shift while clicking the Restore button.

Navigate to the Pwnage folder you created on your desktop and select the 2.1 firmware ipsw file. Double click the ipsw file or select it and click the Open button to proceed.

Step 3

Once iTunes has finished upgrading your iPhone 3G to the 2.2.1 firmware you may launch QuickPwn 2.2.5 from the Pwnage folder you created on your desktop.

Step 4

Make sure you iPhone 3G is still connected to the computer via USB cable then click the blue arrow to proceed.




Step 5

Click the Browse button to locate your iPhone 3G firmware.






Step 6

QuickPwn will check to verify that the ipsw file is valid. After completetion of the verification, click the blue arrow button to proceed.




Step 7

Selecting?Add Cydia?
This step allows you select what you’d like installed on your iPhone. You have the ability to select Cydia, Installer, and replace boot logos. Once you have made your selections click the blue arrow to continue on. If you want a full jailbreaking experience, installing Cydia and Installer is highly recommended



Step 8

QuickPwn will now ask you to confirm your iPhone 3G is still connected via USB cable before it continues. Click the blue arrow button to proceed.




Step 9

QuickPwn will now automatically put your iPhone into recovery mode. Once its in recovery mode you will be prompted to: Hold the Home button for 5 seconds, Hold the Home and Power buttons for 10 seconds, then release the Power button and continuing holding the Home button until your iPhone is in DFU mode.





Step 10

Once QuickPwn detects your iPhone 3G in DFU mode it will begin the jailbreaking process.



Step 11

Once jailbreaking is complete QuickPwn will inform you that it was successfull.


http://www.magicsim.com/iphone-3g-unlock/downloads-and-Jailbreak.htm


http://www.turbo-sim.com/IPHONE_3G/iphone_3g_unlock_2.asp