How to Jailbreak Your iPad Using RedSn0w (Mac) [4.2.1]

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Posted November 23, 2010 at 11:56pm by iClarified

These are instructions on how to jailbreak your iPad on the 4.2.1 firmware using RedSn0w for Mac. You will only be able to perform a tethered jailbreak at this time. This means you will need Redsn0w's assistance to boot into your jailbroken device.

If you want to jailbreak a lower firmware version you can find the appropriate tutorial here.

Step One
Create a folder on your desktop called Pwnage

Download RedSn0w from here and place it in the Pwnage folder. Likewise, download the latest 4.2.1 firmware from below and place it in the same folder.

4.2.1: iPad1,1_4.2.1_8C148_Restore.ipsw

Extract the redsn0w app from the RedSn0w zip file by double clicking it.

How to Jailbreak Your iPad Using RedSn0w (Mac) [4.2.1]

Step Two
Connect your iPad to the computer and launch iTunes.

Select your iPad from the list of devices on the left. Now hold down Option and click the Restore button. Restore is preferred as it won't create any wasted space on your iPad.

Navigate to the Pwnage folder on your desktop and select the 4.2.1 firmware ipsw. Click the Choose button to continue.

Step Three
Once iTunes has finished updating your iPad to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier.

Step Four
Once RedSn0w opens click the Browse button

Step Five
Select the 4.2.1 firmware ipsw we placed in the Pwnage folder on our desktop then click Open.

Step Six
Once the firmware has been verified click the Next button to continue.

Step Seven
RedSn0w will now prepare the jailbreak data

Step Eight
From this window you can select the jailbreak options you would like. Make sure Cydia is selected and click the Next button to continue

Step Nine
Please plug your iPad into the computer and make sure its OFF then click the Next button

Step Ten
RedSn0w will now guide you through the steps to get into DFU mode. You can find more help with DFU mode here

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.

Step Eleven
Your iPad will now reboot

Step Twelve
RedSn0w will then begin uploading the new RAM Disk and Kernel.

Step Thirteen
Once this is complete you will be notified that RedSn0w is done. Click the Finish button. When your iPad finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard.

IMPORTANT:
To use Redsn0w to help you boot back into your jailbroken device simply select Just boot tethered right now from the options window and click Next.

*As usual a big thanks to the iPhone Dev-Team for their hard work and contribution to the iPhone community.

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karlo - February 14, 2011 at 8:32am

i JB my ipad and I turn it off, now if I want turn him on I must boot tethered every time. will I lose my files (apps, calendar, conctats) when i do boot tethered? pleas answer as soon as possible

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Mk - February 8, 2011 at 11:10am

Hello, I just did the jailbreak on my iPad and everything seems to be fine, but I can't sync any of the cracked apps that I have on iTunes... any suggestion???

Rodcal - January 10, 2011 at 1:21am

Hello I have do jailbreak and it works fine but when I turn off and then turn on the ipad, it cant start and cant pass from the Apple logo screen, so then I recover it and do the jailbreak again but the problem is still happening when I turn off the ipad, anyone have an idea to solve it?

LarryInAz - January 12, 2011 at 8:54pm

Just don't turn it off. Let it go to sleep mode when not using and keep it on charger over night.

Cory - December 30, 2010 at 2:53am

I've done the jailbreak twice and each time I get a white cydia app that won't open and safari that will not work either. Please Help! Thanks.

criminal record - December 30, 2010 at 11:46am

do the last screenshot in this tutorial

LarryInAz - December 30, 2010 at 11:31pm

When you say you did the jailbreak twice, did you first run it saying to install Cydia and the 2nd time to Tether Only? If you did it this way then the white icon should be the normal brown Cydia icon and it should load fine. If this fixes your problem then in the future if your iPad reboots itself then you only need to run the Tether Only option to reactivate the jailbreak.

LarryInAz - December 28, 2010 at 9:11pm

I've jailbroken many an iDevice over the last few years. For some reason my iPad will not shut off so I can run Redsn0w. After holding the power button on top and swiping the "slide to power off" button my iPad immediately reboots itself and does not stay off. I am baffled - any advice would be appreciated.

criminal record - December 30, 2010 at 11:39am

dont worry about ipad, run redsnow, choose boot tethered now, follow instructions, it will work. try to countdown seconds yourself, just to be correct.

Miha Robnik - December 28, 2010 at 4:57am

Jailbreak succsesfull, but... After 48 hours all my instalous programs are gone from iPad and no i did not restore or anything, it was just plugged in the computer to fill the battery.. it doesnt happen if i charge it through wall socket... what is up with that ?!?!

criminal record - December 30, 2010 at 11:44am

you have to transfer purchases from ipad or they will be removed, find it on your own.

andre - December 25, 2010 at 11:03am

Hi guys, my Cydia already works, but I can't sync any cracked app... Any suggestions ? thanks

faz - December 17, 2010 at 3:47am

why does the 3G connection not work after jailbreak? is there an unlock neccessary?? please help! :(

Jabba - December 10, 2010 at 2:58am

Thanks. Works. But Tethered Reboot is a big problem longer term. The instructions didn't really make it 100% clear that EVERY time you reboot the iPad you have to now Jailbreak it after following the above. But like I said, thanks, I appreciate the efforts very much and hope a breakthrough from this tethered reboot pans out.

Andy - December 7, 2010 at 3:23pm

My 3G network was unable to detect after I had switch off my airplane mode and I had to boot to Tethered mode to get the network back. Can anyone help? Thanks

iPad Newbie - December 1, 2010 at 6:16pm

So what happens to all the apps i bought from iTunes if i JB my iPad? will all be lost? and i will have to pay for the Business apps that i really need and use daily. Or are you supposed to JB as soon as you get the iPad before buying needed apps?

criminal record - December 4, 2010 at 1:37pm

you still have them, no worries.

iphoneaddict - December 1, 2010 at 5:28am

Following these directions, along with the ones in the comments, I am able to jb, but as soon as I try to sync all my cracked apps after installous, I get stuck at the apple logo, and then I have to do a full restore. This jailbreak is not the best.

99.9 - December 2, 2010 at 5:54pm

when stuck at the apple logo, simply use redsnow again and boot tethered!

Dan - November 29, 2010 at 9:51am

Need help! I just did step by step but the iPad freeze just before the white bar gets the final point, I tried this 4 times and the result is the same. And iTunes does not send any message. Any idea on what is going on?

dyohanan - November 29, 2010 at 10:26am

I just connect my other iPad and start working for the stuck iPad, so this issue is fixed, now the problem is that safari and cydia do not work at all. I saw many comments with the same problem, any idea?

dyohanan - November 29, 2010 at 10:34am

Me again, I just run redsnow again and told it to just reboot tethered and safari and cydia start working again, so every time we do a software installation that needs to reboot we need to reboot it again with redsnow.

sparcus - November 29, 2010 at 4:04am

works! thanks a lot!

terry - November 26, 2010 at 12:21am

Hi Folks: I read elsewhere the problem is currently Cydia, which does not work currently. When installed it affects other apps SUCH AS SAFARI. I'm going to try the jailbreak again without Cydia and see if Safari works. Hope this helps until Cydia gets updated. Happy Thanks,

guizmo - November 26, 2010 at 1:34pm

Hey guys the next step is very important to solve the issues with Safari and no Cydia. Run the RedSnOw again but only using "Just boot tethered right now"

Sparky - November 27, 2010 at 1:10pm

The tutorial is missing a few steps at the end. You will see a white Cydia icon. You need to redo the first few steps but select BOOT TETHERED first.

patty - November 28, 2010 at 11:17am

to make cydia work, you need to go through redsn0w again and check the box for Just boot tethered right now from the options window and click Next.

timmy - November 25, 2010 at 1:28pm

same thing here, neither cydia nor safari works. followed directions twice, same outcome. feedback please?

dandy - November 24, 2010 at 4:40am

cant get my 3g connection working properly :O

terry - November 24, 2010 at 1:15am

Had the same Cydia problem. As well, Safari does not work. Appears briefly then disappears.

someone - November 24, 2010 at 1:58am

redo jailbreak with an option "just reboot tethered right now" then everything works

carlos - November 25, 2010 at 11:36pm

Yes I re-did the same with the thetering option and it worked cydia icon and safari now!!, greetings from El Salvador

jipad - November 24, 2010 at 12:46am

i have tried but after jailbreaking my ipad, the cydia does not work. the icon of cydia is just white.

Aric - November 24, 2010 at 11:37am

Same problem here. I fixed it by turning the iPad of, running Redsnow with 'just boot tethered right now' ticked. Only problem is now iTunes doesn't recognise the iPad and I can't sync anything across.

Jeffrey26 - November 24, 2010 at 12:32pm

I had the same problem. If you go back to redsn0w and run it again but without to check the cydia install option you will found the new logo on start up and cydia will then work.

elia - November 25, 2010 at 4:00pm

i had same problem (cydia doesn't work), and i come back to 3.2 :(

Bruno - November 23, 2010 at 11:59pm

First?? Good tut.