[openwrt/openwrt] usbmode: add modeswitch rule for ZTE MF833U1

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/2e5b44a9892f8b940a9f1570c33a57c7fe371518

commit 2e5b44a9892f8b940a9f1570c33a57c7fe371518
Author: Zihao Diao <hi at ericdiao.com>
AuthorDate: Wed Feb 4 16:10:38 2026 +0800

    usbmode: add modeswitch rule for ZTE MF833U1
    
    ZTE MF833U1 is a LTE dongle that expose a cdc_ether interface for data link
    and WebUI for management. It handles all the "modem" functionalities
    internally and does not expose any serial interface. Instead it acts like a
    "router in a stick".
    
    It initially enumerates as a USB mass-storage device and does not bind any
    network driver, so no netdev is created until a modeswitch is performed.
    
    The test is done on Cudy TR3000 256MB v1.0 running OpenWrt 24.10.5 with an
    unit targeting Chinese market:
    
     - Hardware Version: MF883U1_V1.0.0
     - Software Version: BD_MF883U1V1.0.0B06
     - CMIT ID: 2019CP2106
    
    There are report online that the device have different variants that have
    different behavior across different firmware, HW revisions or SKUs.
    
    Before the switch:
    
    ```
    root at OpenWrt:~# lsusb -t
      /:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci-mtk/1p, 480M
          |__ Port 001: Dev 003, If 0, Class=[unknown], Driver=[none], 480M
    
    root at OpenWrt:~# lsusb Bus 001 Device 001: ID 1d6b:0002 Linux 6.6.119
    xhci-hcd xHCI Host Controller Bus 001 Device 004: ID 19d2:1705
    DEMO,Incorporated DEMO Mobile Boardband Bus 002 Device 001: ID 1d6b:0003
    Linux 6.6.119 xhci-hcd xHCI Host Controller ```
    
    After the switch:
    
    ```
    root at OpenWrt:~# lsusb -t
      /:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci-mtk/1p, 480M
          |__ Port 001: Dev 003, If 0, Class=[unknown], Driver=cdc_ether, 480M
          |__ Port 001: Dev 003, If 1, Class=[unknown], Driver=cdc_ether, 480M
          |__ Port 001: Dev 003, If 2, Class=[unknown], Driver=[none], 480M
      /:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci-mtk/1p, 20000M/x2
    
    root at OpenWrt:~# lsusb Bus 001 Device 001: ID 1d6b:0002 Linux 6.6.119
    xhci-hcd xHCI Host Controller Bus 001 Device 003: ID 19d2:1706
    DEMO,Incorporated DEMO Mobile Boardband Bus 002 Device 001: ID 1d6b:0003
    Linux 6.6.119 xhci-hcd xHCI Host Controller ```
    
    The following kernel debug log is presented:
    
    ``` cdc_ether 1-1:1.0 eth2: register 'cdc_ether' at usb-11200000.usb-1, ZTE
    CDC Ethernet Device, 34:4b:50:00:00:00 ```
    
    Signed-off-by: Zihao Diao <hi at ericdiao.com>
    Link: https://github.com/openwrt/openwrt/pull/21867
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/utils/usbmode/data/19d2-1705 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/utils/usbmode/data/19d2-1705 b/package/utils/usbmode/data/19d2-1705
new file mode 100644
index 0000000000..fca0e6ca6e
--- /dev/null
+++ b/package/utils/usbmode/data/19d2-1705
@@ -0,0 +1,4 @@
+# ZTE MF883U1
+TargetVendor=0x19d2
+NeedResponse=1
+MessageContent="55534243123456782000000080000c85010101180101010101000000000000"