Help setup lte usb modem rndis

Installing and Using OpenWrt
1

im trying to use a usb lte modem zte mf833T (aka mts 836f) on openwrt 22
the device is reconeized as an rndis interface in windows 10

i have followed this steps from https://openwrt.org/docs/guide-user/network/wan/wwan/ethernetoverusb_rndis

i installed the package kmod-usb-net-rndis
and dmesg output the following result :

[  963.657039] usb 1-1: new high-speed USB device number 2 using ehci-platform
[  964.617340] rndis_host 1-1:1.0: RNDIS_MSG_QUERY(0x01010101) failed, -145
[  964.624211] rndis_host 1-1:1.0: rndis get ethaddr, -145
[  964.630682] rndis_host: probe of 1-1:1.0 failed with error -145

i installed the packege usb-modeswitch and i run the command usbmode -l and nothing appears

root@OpenWrt:~# usbmode
root@OpenWrt:~# usbmode -l
root@OpenWrt:~# usbmode -s

the modem is using the chipset Wisafon XZ297520

2

i found a solution from a russian website all credits goes to them
here is the website in case someone needs it : https://4pda.to/forum/index.php?showtopic=796594&st=1820#entry83731090
it has all the information and all the tools that you will need to manage this LTE Modem from unlocking flashing changing imei changing LTE bands, basicly they hack the modem from scratch

for my case i fixed the problem by sending the command AT+ZMODE = 1 to the AT interface of the modem and that thing changed the detection of the modem from RNDIS to CDC and now it is reconeized in openwrt as a CDC Modem and it shows up in the interface section as ETH2 :blush:

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