Wacom HID Support
Wacom provides interactive pen displays, pen tablets, and styluses to equip and inspire everyone make the world a more creative place.
From 2016 Wacom has been using a HID-based proprietary flashing algorithm which has been documented by support team at Wacom and provided under NDA under the understanding it would be used to build a plugin under a LGPLv2+ licence.
Wacom devices are actually composite devices, with the main ARM CPU being programmed using a more complicated erase, write, verify algorithm based on a historical update protocol. The "sub-module" devices use a newer protocol, again based on HID, but are handled differently depending on thier type.
These devices use the standard USB DeviceInstanceId values, e.g.