How to install RGH on your Xbox 360 console. Install CR4 XL on a PHAT Xbox360 R-Jtag+ (RGH Tutorials). How to JTAG a phat Xbox 360 COMPLETE GUIDE. Update JTAG/RGH Xbox 360 kernel / dashboard.
E64 means that something is wrong with the chip, software on the SD card, SD card it self or similar.