Introduction

The CH347 is an affordable SPI programmer.

Firmware Format

The daemon will decompress the cabinet archive and extract a firmware blob of unspecified format.

This plugin supports the following protocol ID:

• org.jedec.cfi

GUID Generation

These devices use the standard USB DeviceInstanceId values, e.g.

• USB\VID_1A86&PID_55DB

Update Behavior

The device programs devices in raw mode, and can best be used with fwupdtool.

To write an image, use sudo fwupdtool --plugins ch347 install-blob firmware.bin and to backup the contents of a SPI device use sudo fwupdtool --plugins ch347 firmware-dump backup.bin

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x1A86

External Interface Access

This plugin requires read/write access to /dev/bus/usb.

Version Considerations

This plugin has been available since fwupd version 1.8.14.