Here's how to change or set custom boot logo on iOS 11 to 11.1.2 iPhone. No jailbreak or computer is required to make this process work.
The icing on the cake of any jailbroken device has to be a custom animated boot logo. Problem is, depending on which particular firmware/jailbreak solution you're running, it may not actually work properly.
The newly released Sn0wbreeze 2.5.1 adds in the ability to enable “Animate” (custom animated boot logos) on devices jailbroken on the latest iOS 4.3.1 firmware.