Those methods are not as easy as putting an update.zip on an sd and booting cleanly from the phone no tools or root.. thats what im referring to
You don't need tools are root to install the leaks. The leaks are the EXACT same files as being pushed out officially. The only difference with the leaks is that if you are NOT rooted, you have to put it on your external /sdcard-ext and manually boot into the stock recovery and install it. The stock recovery looks in /cache for OTA updates...so if you are rooted you could copy the .zip and .crc file there and reboot your phone for it to automatically install it.
The only people who need to use the "tool" to install it are people already on an earlier version of one of the leaks.
SnkBitten - http://android.snkbitten.com/ (OG Droid)
Motorola Droid 4 JB 4.1.2 + Root
Motorola X DevEd KK 4.4
Google Nexus 10 JB 4.3 + Root