I was able to get as far as the steps on the cable with the ERASE and RESET buttons.
Then I opened the SAM-BA software and I'm told there is a fatal error- No Valid Processor ID Found. I chose the board type recommended in the "Upgrading a 20b HP Calculator - Version 9-16-2009" instructions.
And now the 30b is blank.
Um... also, where do I get the "20b Flash Kit"? There appears to be some more files in that which I may not have.
I would appreciate ANY assistance!