41CL self-update via embedded serial port

[smp]

Hi folks, and thank you for all your attention.

I'm getting quite frustrated with this update, it's not going well for me.

I have downloaded the UPDAT-3B.ROM file.

I am following the clupdate-1.1.0-readme.txt file. All of the preliminary Java commands on my Mac work just fine for listing things and comparing two ROMs and all. Then I get to the real stuff, and things go awry.

I start from a MEMORY LOST state. I then go to the section on loading the UDPAT-3B.ROM file into my CL.

MMUDIS -> works
MMUCLR -> works
"YFNX" -> works
PLUG1L -> works
MMUEN -> works
SERINI -> works
BAUD48 -> CL reports NONEXISTENT

Obviously, I am doing something completely wrong here. Why should this be happening with such a simple set of commands?

smp