Tethered Jailbreak all non-A5 Devices on iOS 5.1

     We realize that some of you non-A5 jailbreakers are itching to get to 5.1, even though there seems to be no compelling new feature there. Because of geohot’s limera1n exploit, those with devices earlier than the iPad2 can test the 5.1 jailbreak waters if they really want to, using redsn0w 0.9.10b6. Here’s what you need to know:

• his is a *tethered* 5.1 jailbreak for non-A5 devices. You’ll need to use redsn0w to “Just Boot” your device every time it power cycles, otherwise jailbreak apps won’t work (neither will Safari).
• If you use ultrasn0w for your carrier unlock, be sure to use a custom IPSW to get to 5.1 first! Don’t ever restore to a stock Apple IPSW! Use redsn0w’s “Custom IPSW” button to create a NO_BB_* version of the 5.1 IPSW and restore to that instead of the stock one. (That option is available only to 3GS and iPhone4-GSM owners.) ultrasn0w itself will be updated for 5.1 in the next few days (same baseband support, not 5.1’s baseband).
• If you’re lucky enough to have an old-bootrom 3GS, this jailbreak is actually untethered (redsn0w will figure that part out automatically).
• While we were at it, we added @pod2g’s steaks4uce exploit to support MC models of the iPod touch 2G (whose last firmware was 4.2.1). So now redsn0w will auto-detect and jailbreak all versions of that older device.
• iBooks won’t work until a future update of redsn0w

Download :

• redsn0w 0.9.10b6 for OS X
• redsn0w 0.9.10b6 for Windows (be sure to run in Administrator mode)

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Downgrade Your iPhone Firmware Using TinyUmbrella

These are instructions on how to downgrade your iPhone firmware using TinyUmbrella. In order to follow this tutorial you must already have saved your SHSH Blobs for the firmware you want to restore to.

• Download TinyUmbrella from here and save it in a Pwnage folder on your desktop if don't have it already.
• Download the firmware you want to restore to from here and save it in a Pwnage folder on your desktop. Remember you must have saved your SHSH Blobs for this firmware already.
• Launch TinyUmbrella by double clicking its icon.
• Connect your device and make sure it lists saved SHSH Blobs for the firmware you are restoring to. You may need to click Save SHSH to restore your blobs from Cydia if you don't see any listed.

• Click the Start TSS Server button.

*Do not continue if TinyUmbrella's TSS server is not started successfully.

• Launch iTunes by clicking its icon in your Start Menu.
• Place your iPhone into DFU mode by holding down the Power and Home buttons for 10 seconds then release the Power button and continue holding the Home button for another 10 seconds.
• Select your iPhone from the list of devices on the left, hold down the Shift key and click Restore.
• Navigate to the Pwnage folder on your desktop, select the ipsw file you downloaded and click the Open button
• iTunes will now restore to the lower firmware version.

If you  get an Error 1 or you get stuck in recovery mode follow the steps below

• Download FixRecovery from here and save it to the Pwnage folder on your desktop. Then extract the archive.
• Download zlib1.dll from here and save it to the Pwnage folder on your desktop. Then extract the archive.
• Place your iPhone into DFU mode by holding down the Power and Home buttons for 10 seconds then release the Power button and continue holding the Home button for another 10 seconds.
• Double click to launch the fixrecovery43 executable we just extracted.
• FixRecovery will perform its magic after which your device will be successfully rebooted.

IMPORTANT:
 If fixrecovery does not work the first time you may need to rerestore to your desired firmware version and try again. Remember to keep the TSS Server running during your second restore as well.

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Untether a previously tethered jailbreak using Corona

These are instructions on how to untether your previously tethered iOS 5.0.1 jailbreak using Corona.

Corona package will allow your 5.0.1 device to install pod2g's untethered exploits and reboot without requiring an external tool like redsn0w or sn0wbreeze, and without having to restore your device (so you get to keep all your apps, contacts, etc).

•  Launch Cydia from your Springboard.
• Select the Search tab at the bottom of the screen.
• Type Corona into the search field and press to select the Corona 5.0.1 Untether package once it's found.
• Press the Install button at the top right of the screen.
• Press the Confirm button to begin installation.
• Once installation has completed successfully you can press the large Return to Cydia button.

 You can now reboot your device with an untethered jailbreak!

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How to Jailbreak Your iPhone Without Updating the Baseband (Windows) [5.0.1]

These are instructions on how to jailbreak your iPhone 3GS or iPhone 4 on iOS 5.0.1 without updating the baseband using RedSn0w for Windows. You may want to do this to preserve an unlock from a lower baseband version.

Please note this jailbreak is tethered for every device but the old bootrom iPhone 3GS which means you will need to connect your device to the computer each time you reboot. 

1.Create a folder on your desktop called Pwnage
Download RedSn0w  and place it in the Pwnage folder. Likewise, download the 5.0.1 firmware from here and place it in the Pwnage folder.

Extract  RedSn0w by double clicking it.

2.Launch the redsn0w application from the redsn0w folder we just extracted.
3.Click to select Extras from the main menu.

4.Click to select Custom IPSW from the Extras menu.

5.Navigate to the Pwnage folder on your desktop and select the IPSW we downloaded then click Open.

If you are using the iPhone 3GS you may be asked to identify whether you are on a newer or older model.

6.RedSn0w will now begin building a custom IPSW for you.

7.You'll be notified once RedSn0w has completed building your IPSW. Click the OK button.

8.Click the Pwned DFU button from the Extras menu.

9.Plug your iPhone into the computer and make sure its OFF then click the Next button

10.RedSn0w will now guide you through the steps to get into DFU mode.

Hold down both the Home button and the Power button for 10 seconds.

Release the Power button and continue holding the Home button until RedSn0w detects the device.

11.RedSn0w will run the LimeRa1n exploit.

12.You'll then be notified that your iPhone is in Pwned DFU mode.

13.Launch iTunes .
14.Select your device from the list on the left then under the Summary tab hold down the Shift key and click the Restore button.

15.You will then be asked to select your IPSW for restore. Navigate to the Pwnage folder on your desktop and select the IPSW that begins with NO_BB then click the Open button.

16.iTunes will now restore and jailbreak your device using the Custom IPSW.

BOOT TETHERED
Once you have jailbroken you will need to rerun redsn0w to boot tethered.

• From the main RedSn0w menu click the Extras button.
• Select Just boot from the Extras menu to just boot tethered.

UNLOCK:
If you have a supported baseband you can now install UltraSn0w to unlock your device. Instructions are here.

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How to Find the Firmware and Baseband Version of Your iPhone

These are instructions on how to find the firmware and baseband version (modem firmware) your iPhone is currently running.

Step One: press to launch Settings from your Springboard.

Step Two: press to select General from the Settings Menu.

Step Three: press to select About from the General Settings Menu.

Step Four: from the about screen you can find your firmware version under the Version label. 

Scroll down and you can find your baseband version under the Modem Firmware label.

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How to Unlock the iPhone 4, 3GS, 3G Using UltraSn0w

These are instructions on how to unlock the iPhone 4, iPhone 3GS, and iPhone 3G for use with any GSM cellphone carrier using UltraSn0w. This will work with the iOS 4.2.1 firmware if you are on the 06.15.00 baseband.

Before you can follow these instructions you must have a jailbroken iPhone and you must be on the 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00, or 01.59 baseband(modem firmware).

To find your firmware and modem firmware(baseband) versions you can follow this tutorial. 

If you are on T-Mobile remember to turn off 3G before starting...

1.Press to launch Cydia Installer from your SpringBoard.

2.Press to select the Manage tab at the bottom of the screen.

3.Press to select the large Sources button

4.If the ultrasn0w repo is not present press the Edit button at the top right of the screen. Otherwise, skip to Step 9.

5.Press the Add button at the top left of the screen.

6.Enter http://repo666.ultrasn0w.com/ as the source url and press the Add Source button.

7.Once the source has been added press the large Return to Cydia button.

8.Press the Done button at the top right of the screen.

9.Press to select repo666.ultrasn0w.com from the list of user entered sources.

10.Press to select ultrasn0w from the list of packages

11.Press the Install button at the top right of the screen.

12.Press the Confirm button at the top right of the screen.

13.After installation completes successfully press the large Restart Springboard button.

14.You should now be able to insert the SIM of your choice! 

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Jailbreak iOS 5.0.1 Untethered With Redsn0w 0.9.10b3

iPhone-Dev team released an untethered jailbreak for iOS 5.0.1 in the form of redsn0w 0.9.30b1 for Windows and Mac OS . This untethered jailbreak is based on Pod2G’s exploits, he was working on iOS 5.0.1 untethered jailbreak from quite some time now.

• iPhone 4
• iPhone 3GS
• iPod Touch 3G
• iPod Touch 4G
• iPad 1

How To Jailbreak iOS 5.0.1 Untethered With Redsn0w 0.9.10b3:

Note: Before you proceed you should know that this jailbreak does not support iPad 2 and iPhone 4S. 

Things you will need during this process:

• iTunes 10.5.2,
• Redsn0w 0.9.10b3(download redsn0w for mac HERE , download redsnow for windows HERE)Step 1: Connect your iOS device to computer and make a backup all your contacts and phone data .

Step 2: Restore your iPhone, iPad or iPod Touch with iOS 5.0.1

Here are the official download links to iOS 5.0.1:

• iPhone 4S
• iPhone 4 (GSM)
• iPhone 4 (CDMA)
• iPhone 3GS
• iPad 2 WiFi
• iPad 2 GSM
• iPad 2 CDMA
• iPad
• iPod touch 3G
• iPod touch 4G

Warning for unlockers: Restoring a stock IPSW file will update your baseband and you will loose your unlock. If you want to update your device to iOS 5.0.1 with your baseband preserved,follow this tutorial .


Step 3: Launch redsn0w 0.9.10b3 .

Step 4: Click Jailbreak
Step 5: In this step make sure your iPhone, iPad or iPod Touch is completely turned off.

Step 6 : Click Next and follow the instructions on your screen to put your iPhone in DFU mode;

• Hold down both the Home button and the Power button for 10 seconds.
• Release the Power button and continue holding the Home button until (approx 15-25 sec) your device’s screen turn black.

Step 7: Check Install Cydia and click Next

Important: If you’ve already tethered jailbreaked your iOS device on iOS 5.0.1 using redsn0w don’t forget to UNCHECK Install Cydia option. 

Step 8: Redsn0w will exploit your iOS device with limera1n, sit back and relax while redsn0w jailbreaks your iOS device. Once this process is complete you will be notified that RedSn0w is done. When your iPhone, iPad, iPod Touch finishes rebooting (5 minutes or so) it will be jailbroken untethered and running iOS 5.0.1.

That was it guys, you don’t need to boot your device in tethered mode anymore.

Update #2: The b2 version of redsn0w includes the launchctl-related fix by @planetbeing as mentioned by @saurik here and here. As usual, you can just re-run redsn0w in jailbreak mode over your existing 5.0.1 jailbreak (even a PwnageTool one), making sure to de-select “Install Cydia” if you do. Always be sure to do a controlled “slide to power off” shutdown of your device before running redsn0w.

Update #3: The b3 version of redsn0w fixes a problem where re-running redsn0w over an existing jailbreak would cause MobileSubstrate-based apps to stop running until MS was installed again. Now you can re-run the redsn0w jailbreak step without worrying about that (but still remember to de-select the “Install Cydia” option if it’s already installed).
TIP: If auto-detection fails and redsn0w tells you no identifying data was found, you can always pre-select the appropriate 5.0.1 IPSW using “Extras->Select IPSW”.

You can download redsn0w 0.9.10b3 (download for windows and for mac) to jailbreak your iPhone 4, iPhone 3GS, iPod Touch 3G, iPod Touch 4G and iPad 1 on iOS 5.0.1
Update : 

• redsn0w 0.9.10b6 for OS X
• redsn0w 0.9.10b6 for Windows (be sure to run in Administrator mode)

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