For a video on the installation, see Macho Nacho's video:    • Giving The OG XBOX Quadruple The RAM ...  

This is a detailed and technical explanation of my journey through upgrading the Xbox to 256MB of RAM. It required many months of reverse engineering, hardware engineering, software hacking, and perseverance.
I previously published a mod to upgrade the Xbox 1.6 to 128MB so going for another double was natural.

00:00 Intro
00:25 Proof of concept
16:15 Production
30:14 Software