QUOTE
I had to overwrite just xboxdash.xbe during the upload.
You need to change more than that! (IMG:style_emoticons/default/smile.gif)
It's likely that you have shadow C enabled, and you've put the new softmod files on the shadow C rather than the real C. Boot with Frosty's Rescue disc to be certain you've bypassed shadow C, then ftp the Kingroach files to your C and E partitions.
But first, if you want dual boot then you need to build a different Kingroach set - you want retail, not basic. The cleanest way is to start with a clean 5960 dash and follow the instructions in the Kingroach manual - particularly paragraphs 4 and 5. Then you delete the contents of your existing C and replace them with the new file set, and copy the Kingroach E files to your E.
Your process is absolutely fine, but it sounds as though your original MS Dash wasn't the latest version, which is why Topspin keeps updating it. Slayers and CASH both have the latest dashboard - get hold of one of those, and redo the process, and the problem should go away.
QUOTE
2) Selected "Boot XBL dash with eject" in NDURE
You don't normally want this option - the only option you need is the Kernel - 5838 in your case. If you do need the live dash for any reason you can toggle this option later, from within UnleashX.
Shadow C is empty by default. Once the softmod is built and you reboot, just ftp the stock C (from Slayers or CASH) across to the empty Shadow C. Your Xbox should then work normally - power will boot to UnleashX, you will have system sounds within UnleashX, you can get to MS Dash from the UnleashX Menu, and eject will boot to MS Dash.