Plugin: Aver HID-ISP
Introduction
The AVer HID In-System-Programming plugin is used for various products that can be updated using a proprietary HID protocol.
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.aver.hidcom.aver.safeisp
GUID Generation
These devices use the standard DeviceInstanceId values, e.g.
USB\VID_2574&PID_09F0
Update Behavior
The device is updated using a HID request/response with a fixed size payload.
Once ready, the plugin can start the update with the UVCX_UCAM_ISP_FILE_START header.
After the device sends back the UVCX_UCAM_ISP_FILE_START packet, the PC process can send the
firmware file in chunks using UVCX_UCAM_ISP_FILE_DNLOAD.
After the last chunk, the plugin sends UVCX_UCAM_ISP_FILE_END packet and the device will check
whether the firmware is valid. If the firmware file is correct, the device will send
UVCX_UCAM_ISP_START to PC, and the plugin can continuously send UVCX_UCAM_ISP_STATUS to get
the ISP progress percentage.
If the firmware file is incorrect, the device sends UVCX_UCAM_ISP_STOP back to the plugin,
and the ISP progress should be terminated. The PC process should go back to UVCX_UCAM_ISP_STATUS
and restart the process if needed.
Vendor ID Security
The vendor ID is set from the USB vendor, in this instance set to USB:0x2574
External Interface Access
This plugin requires read/write access to /dev/bus/usb.
Version Considerations
This plugin has been available since fwupd version 1.9.2.
Owners
Anyone can submit a pull request to modify this plugin, but the following people should be consulted before making major or functional changes:
- Pierce Wang:
AVer-V001598