Holding down the Volume Up key whilst a jailbroken iPad is booting will disable ALL jailbreak tweaks and apps except Cydia. This will allow you to remove any jailbreak app or tweak which is causing your iPad not to boot properly, for example by hanging at the Apple logo.
As soon as the iPad starts it's boot process (just as the Apple logo appears), hold down the Volume Up key until the iPad reboots.
As soon as the iPad starts it's boot process (just as the Apple logo appears), hold down the Volume Up key until the iPad reboots.
