|X2.6CE, X2 5032 Bios, XBMC 3.33, Didn't have to unlock/lock, X2 5035 had terrible load times, constantly crashed, and just wouldn't work. Possible bad memory on mem banks 1/2 but not sure. Works fine now w/5032. Use StarTech.com 2.5 Inch and 3.5 Inch 40 P Inch Male IDE to SATA Adapter Converter on Amazon for the conversion.
I'll try with another xbox 1.1 at a later date.