Can't turn on iPad after hard reset

•         Hard reset before jailbreak or restore the device to original settings deletes all data & installed programs & resets to the factory settings. However, this might cause your device to stay with logo and not to move:

Try to reboot it by plugging in your device to iTunes and then press & hold down Home & Power buttons together until the screen comes out with dock & iTunes (the factory setting).

•       Press Shift & restore on the summary page of iTunes:

Press & hold down SHIFT key followed by restore on iTunes summary page. This action will allow you to browse the firmware in your prepared folder.

•       iOS Firmware for shift & restore and for jailbreak process:

Each step uses the same firmware on its own process.

•       Custom iOS firmware for shift & restore VS Original iOS firmware for jailbreak:

This requirement solves the error identified by 1015 of iPhone3G on the baseband of 06.15.00 (modem firmware). iOS firmware on this requirement requires two types but the same version i.e. custom, original.