Brian,
If you still haven't been able to update successfully yet, you may want to try using StarPatch.
I personnally think that Starpatch does a much better job at updating the Meade.
Starpatch is free (for the LX200 GPS) and can be found here:
http://www.stargps.ca/StarPatch.htmLet me know if this works for you.
Jim
PS. I put the entire instructions on the other posting in this forum regarding problems updating the firmware.