My problem is similar, but was not caused (at least I don't think it was from an update.xbe)
I'm having serious trouble with the MS Dash
I have the EvolutionX M7 BIOS and am using the Evox Dash, but I can't access the MS dash from Evox, or if I power up with the chip off.
On C: on the Xbox, I have a 752KB xboxdash.xbe (the default.xbe from the boot disk), and a 1.87MB msxboxdash.xbe (which I renamed per the tutorial I was following). No matter how I set the .ini, or how I name the .xbe files I can't for the life of me get the MS dash to work...
Looking at XBtools, the BIOS should boot evoxdash.xbe first, then xboxdash. I've tried renaming both .xbe files with nearly every combination statistically possible, retransferring the original .xbe from my C: backup on my PC through FlashFXP and have had zero luck.
I've heard that the HDD being unlocked could cause this problem, but it's the factory HDD, which are locked by default if I am not mistaken...
Anyone have any suggestions?
Any help would be appreciated. God knows I never would have made it this far without a ton of help from all the tutorials and forums here
I forgot to mention that when I try to jump to the MS dash from evox, depending on how I name the .xbe files, I get the "Your Xbox needs service" screen, sometimes with the 21 and sometimes without. Or, (again, depending on what I have the .xbe files named) it just reloads the evox dash.