Redsn0w Jailbreak TUTORIAL iOS 4.2, 4.2.1 iPhone 4, 3GS iPad iPod Touch 2G/3G/4G [How To]

Complete tutorial that will show you (live) the Jailbreak process while using redsn0w on any device (iPhone, iPad, iPod touch) except iPhone and iPod touch first Gen. Similarly to Limera1n and GreenPois0n, redsn0w will give you access to the Cydia application (which gives you millions and millions of possibilities!) Free applications, interface modifications, winterboard themes, games, tweaks and more!

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Download your iDevice software here: thebigboss.org/guides/iphone-firmware-files

Then download redsn0w

For Macs:
sites.google.com/a/iphone-dev.com/files/home/re…

For Windows:
sites.google.com/a/iphone-dev.com/files/home/re…

The MC model thing (instructions should also be in redsn0w:

Check your model number....if it begins with "MC" then you have the new bootrom if it is not "MC" then you have an older bootrom also check the 4th and 5th number in you serial number if it is lower then 40 then you have an old bootrom.

settings, general, about........scroll down to model number and check.............. mine is MC131C (new bootrom) and check serial number as well... my serial is new bootrom ***43****** the first two numbers in the serial are the factory numbers, the third number is the year it was made and the two numbers following those numbers are the week of that year it was made.

TROUBLESHOOTING:

a) Before opening Redsnow, Right Click on it and hit Properties. Then go to 'Compatibility' tab. Here Check mark 2 things. One will be on top that says 'Run this program in Compatibility mode for' (Choose Windows 98/ Windows ME from drop down menu) and second will be at the bottom that says 'Run this program as administrator'. Press Apply then Ok. Done. Now run Redsnow.

b) If while running Redsnow, it gets stuck on uploading Ramdisk or waiting for reboot, then hold home and Power buttons together on your iPHone or iPOd Touch for few seconds till it shuts off. Don't hold buttons too long that it turns back on again. Now when it is completely off then run Redsnow again.

c) If Redsnow gets stuck during Jailbreaking Process then simply reboot your Computer. Now run Redsnow after rebooting computer. IT will run smooth.

d) Also while running Redsnow, when it is time to hold buttons- at the end keep holding home button as long as 30 seconds till jailbreak data picture appears on iPhone/iPod screen. Done.