RASPIAUDIO VOICE DSP+

Update Voice DSP+ in your browser

Choose a USB mode and install it directly from Chrome or Edge. No developer tools or additional application required.

1. Choose a USB mode

Voice DSP+ firmware

Connect the board over USB, keep it powered during the update, then choose the XMOS device in the browser picker.

No device connected.

I understand that unplugging the board during flashing can leave the firmware incomplete.

Waiting.

Use Chrome or Chromium from HTTPS, or from localhost during development.
If Windows refuses access to the DFU interface, use the documented dfu-util fallback.
If the failed shortcut firmware cannot be recovered by WebUSB, first use the Windows DFU rescue ZIP.
If that rescue sees 20B1:4FBA but fails with Cannot set alternate interface: LIBUSB_ERROR_IO, USB recovery is probably broken by that test firmware. A factory alt 0 diagnostic ZIP is archived, but the reliable recovery path is Raspberry Pi SPI boot or XTAG.
This page flashes the public *_dfu_upgrade.bin images only.