Another stupid flashing cable question HP-30b / HP-15C CE

[Maximilian Hohmann]

Hello,

thanks for your detailed explanations, these may come handy one day...
I have since many years been tinkering with Arduinos and similar microcontroller boards, most of which use Atmel chips. The USB programming adapters usually also contain chips from FTDI (or clones thereof). My - so far: failed - attempts at flashing the Atmel based HP-20b calculators are a new experience. But I am certain that a solution will be found.

(09-29-2024 11:54 AM)AnnoyedOne Wrote:  José Divasson says that he's "bricked" multiple HP-15C LE's (Atmel AT91SAM7L128 based calculators).

I would never attempt to flash an HP-15C LE. They are much too rare and precious to risk anything (asking prices these days are typically over 200$/Euro) and why would one want to flash their system in the first place.

One of the two (ex?) employees of the calculator division from HP, who used to be very active on this forum (C. de Brébisson and T. Wessman), once wrote that calculators like the HP-20b and HP-30b cannot be bricked by flashing attempts. The bootloader is hardwired. So there is always hope.

Regards
Max