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PCAN USB FD firmware update fails

Posted: Thu 11. Jun 2026, 12:59
by annoyed
When using Peak Flash 3 to update the firmware on my PCAN USB FD, it always reports:

"Error: Accessing the momory of the device failed"

When the PCAN USB FD enters bootloader mode (flashing red light?), the USB drive appears on my laptop and I can write to it.

Once Peak Flash 3 fails, the PCAN USB FD remains in bootloader mode until unplugging/re-plugging.

Where can I download the 3.5.1 firmware to manually update the device? (plus some instructions to ensure it is correclty updated).

Re: PCAN USB FD firmware update fails

Posted: Fri 12. Jun 2026, 07:47
by G.Lang
Hi,

please send us an email with your devices serial number (printed on the PEAK sticker) and refer to this forum entry.

Best regards
Gunther