## Introduction

The EP963x is a generic MCU used in many different products.

## 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:

- `tw.com.exploretech.ep963x`

## GUID Generation

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

- `USB\VID_17EF&PID_7226`

## Update Behavior

The device usually presents in runtime mode, but on detach re-enumerates with the same USB PID in an unlocked mode. On attach the device again re-enumerates back to the runtime locked mode.

## Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to `USB:0x17EF`

## External Interface Access

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

## Version Considerations

This plugin has been available since fwupd version `1.4.0`.