A more modern and widely compatible modification that uses a "glitch" chip to bypass security. While boot times can vary (from 2 seconds to 50+ seconds), it works on almost all Xbox 360 revisions.
To play Viva Piñata: Party Animals without a physical disc or region restrictions, you need a modified console: Viva Pinata Party Animals -Jtag RGH-
An older, highly stable exploit for early Xbox 360 models that allows for near-instant boot times. A more modern and widely compatible modification that
Viva Piñata: Party Animals on JTAG/RGH — The Ultimate Setup Guide Viva Pinata Party Animals -Jtag RGH-
Both methods allow you to run , meaning you can launch games directly from an internal or external hard drive and use homebrew applications like Aurora or XEX Menu.