[WP-34S] Troubleshoot internal USB Board

[Sanjeev Visvanatha]

Hi Harald!

I had flashed it initially with the HP cable. This worked and I had the basic 34s firmware. Then I installed the USB board and wanted to flash it again with the USB board to get the IR/XTAL version. That did not work via USB, in spite of all the connections appearing correct and the computer recognizing the FTDI chip. So I flashed it again using the HP cable. This also worked, and IR printing and XTAL was working. Then about a week later, I decided to attempt I/O with the emulator via USB, and could not get that to work at all. I then tried flashing via USB using the instructions from the manual, and the calculator went into that "dead state", and hasn't recovered. The HP cable method does not work at all now. To answer your question, the USB has never worked.