1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
---
title: Plugin: System76 Launch
---
## Introduction
This plugin is used to detach the System76 Launch device to DFU or UF2 mode.
To switch to bootloader mode a USB packet must be written, as specified by the
System76 EC protocol.
## GUID Generation
These devices use the standard USB DeviceInstanceId values, e.g.
* `USB\VID_3384&PID_0001&REV_0001`
## Update Behavior
The device usually presents in runtime mode, but on detach re-enumerates with a
different USB VID and PID in DFU or UF2 mode. The device is then handled by the
`dfu` or `uf2` plugin.
On DFU or UF2 attach the device again re-enumerates back to the runtime mode.
For this reason the `REPLUG_MATCH_GUID` internal device flag is used so that
the bootloader and runtime modes are treated as the same device.
## Vendor ID Security
The vendor ID is set from the USB vendor, in this instance set to `USB:0x3384`
## External Interface Access
This plugin requires read/write access to `/dev/bus/usb`.
## Version Considerations
This plugin has been available since fwupd version `1.5.6`.
|
