HP 20b Sale in Germany

[SammysHP]

Today they arrived, together with a pack of fresh CR2032! Nice!

Unfortunately my attempts at flashing the firmware were not successful so far. I made a connector with pogo pins and a little PCB for the reset and erase buttons.

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Erase worked fine. The serial connection not so much. I only found a CH340 and a PL2303 USB-TTL adapter in my box, neither of them worked. Tried it under Linux (wp34sflashcmd) and Windows (MySamBa).

While I would like to fix my setup, I'd also be happy if someone could flash them for me. Anyone with the proper hard- and software in the area of Hanover, Germany?

Update: Found an FTDI adapter and it worked smoothly under Linux with wp34sflashcmd!