Quectel RM502Q-AE Connection Problem

I am building a 5G IoT device using Raspberry Pi4 and Quectel RM502Q-AE. But I have gotten connecting issue in connecting to the network. The firmware is updated to RM502QAEAAR13A03M4G. After notice quectel-CM is needed to have pdu sessions, I get the connect management tool from GitHub - numbqq/quectel-CM.

As the first time I run the tool, it yells:

[04-17_15:50:59:710] QConnectManager_Linux_V1.6.2
[04-17_15:50:59:711] Find /sys/bus/usb/devices/2-1 idVendor=0x2c7c idProduct=0x800, bus=0x002, dev=0x003
[04-17_15:50:59:712] unknow at interface for USB idProduct:0800

[04-17_15:50:59:716] network interface ‘’ or qmidev ‘’ is not exist
[04-17_15:50:59:717] qmidevice_detect failed
[04-17_15:50:59:717] atdevice_detect failed
[04-17_15:50:59:717] qmidevice_detect failed

The module is recognized “Bus 002 Device 003: ID 2c7c:0800 Quectel Wireless Solutions Co., Ltd. RM502Q-AE” by lsusb.

I am not sure what to do the next. Do I need install any drivers? or I should modify the module using AT commands?

Dear @haitao
Did you install driver before? If not ,please install driver, I will share with you via Message,please check.

can i get the driver too please

apt install libqmi (or libmbim, depending on which protocol you prefer)