#### Plugin: Logitech Rally System

## Introduction

This plugin can upgrade the firmware on Logitech Video Collaboration products (RallySystem). ioctl is used to query system version and serial number from Audio module of RallySystem. USB bulk transfer is used to push new firmware image to TableHub module of RallySystem

## Firmware Format

The daemon will decompress the cabinet archive and extract a firmware blob in a packed binary file format.

This plugin supports the following protocol ID:

- `com.logitech.vc.rallysystem`

## GUID Generation

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

- `USB\VID_046D&DEV_088F`

## Update Behavior

The peripheral firmware is deployed when the device is in normal runtime mode, and the device will reset when the new firmware has been written.

## Design Notes

## Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to `USB:0x046D`

## External Interface Access

This plugin requires read/write access to `/dev/bus/usb` and the ioctl interfaces `HIDIOCGFEATURE`, `HIDIOCSFEATURE` and `HIDIOCGINPUT`.

## Version Considerations

This plugin has been available since fwupd version `1.9.7`.