Well it looks like I got it going at the moment the screen is scrolling by a bunch of packages being installed so this is a good sign.
What I did to get it going:
1. Reflashed to Sharp to make sure it was clean and the Z was still functioning.
2. Replaced Sharp\'s initrd.bin & zImage.bin on the CF card with the OZ files.
3. Reset the Z. Held OK & ON buttons.
4. Choose option 4 on the menu, update.
5. Reset the Z again then choose option 3 from the menu, format.
6. restarted the Z saw the packages installing screen scroll by.
7. Finally got to the \"Tap anywhere on the screen to continue.
At this point the Z isn\'t responding to anything, tried a reset and all that.
So here I sit a little closer than I was.