I have slim XDK with 13599 dash(i never tried to update it cos everything worked fine). Now i need higher version of dash(i can't lauch some of new content). I downloaded SystemUpdate_15574_CD from xbox.com and patched all xex files in systemupdate folder+default.xex When i launched default.xex from xexmenu it said "you console is up to date". P.S. I bought XDK to play some discs with betas and i enjoy it because its relatively rare piece of gamehistory - not for modding/cheating/hacking/programming. In other words i'm noob user of XDK. Could you PM me about how can i install new dash to XDK using only usb stick(i strongly don't want to wire XDK and PC).