BTW: I should mention I just checked to see if my Diamond is _really_ unlocked and it's not because the SPL-0.57.0000 is showing up in bootloader.
Looks like the Diamond never gets unlocked because of the 262 error I mentioned earlier... so the question goes back to: how do I unlock my Sprint Touch Diamond? I've tried everything folks have said on this forum. Running it in bootloader doesn't work for me.