Quectel AG550Q module not detected in adb

AJK · March 18, 2022, 1:19pm

Hello,

I’m having an issue trying to get adb to work with my quectel module. The issue I’m having is that ‘adb devices’ does not return any output.

The said module is connected to the nxp board (imx8 series) via the USB downstream port of a USB Hub.

The output logs from the board (imx8) were

lsusb
Bus 002 Device 003: ID 2c7c:0455 Quectel Wireless Solutions Co., Ltd.

cat /etc/udev/rules.d/51-android.rules
SUBSYSTEM==“usb”, ATTR{idVendor}==“2c7c”, ATTR{idProduct}==“0455”, MODE=“0666”, GROUP=“plugdev”, SYMLINK+=“android%n”

cat .android/adb_usb.ini
0x2c7c

ls -la /sys/bus/usb/drivers/option/
total 0
drwxr-xr-x 2 root root 0 Mar 18 13:04 .
drwxr-xr-x 13 root root 0 Mar 18 13:04 …
lrwxrwxrwx 1 root root 0 Mar 18 13:06 2-1.1:1.0 → …/…/…/…/devices/platform/bus@5b000000/5b110000.usb3/xhci-cdns3/usb2/2-1/2-1.1/2-1.1:1.0
–w------- 1 root root 4096 Mar 18 13:06 bind
–w------- 1 root root 4096 Mar 18 13:04 uevent
–w------- 1 root root 4096 Mar 18 13:06 unbind

cat /sys/kernel/debug/usb/devices

T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=5000 MxCh= 0
D: Ver= 3.20 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 1
P: Vendor=2c7c ProdID=0455 Rev= 4.14
S: Manufacturer=Quectel
S: Product=LTE-A Module
S: SerialNumber=9bf14fb3
C:* #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=896mA
A: FirstIf#= 4 IfCount= 2 Cls=02(comm.) Sub=06 Prot=00
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E: Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=06 Prot=00 Driver=cdc_ether
E: Ad=82(I) Atr=03(Int.) MxPS= 16 Ivl=32ms
I: If#= 5 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
I:* If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
E: Ad=8d(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=0e(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 6 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=40 Driver=(none)
E: Ad=84(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=83(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 7 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=(none)
E: Ad=86(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=85(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 8 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=(none)
E: Ad=88(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=87(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#=13 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)
E: Ad=05(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=89(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms

I also tried the adb kill-server ; adb start server.
I am not sure how to proceed at this point.
Can you suggest the further steps I will have to go for?

Janus.Li-Q · June 14, 2022, 1:07pm

Here we take Quectel’s AG215s module as an example to demonstrate how to adb into AG55x. The process of IMX8 is similar.

Make sure that imx8 has integrated the adb tool;
Make sure the VID has been added to adb_usb.ini;
After running adb shell from powershell, you can obtain ordinary user permissions, you can directly enter su to temporarily escalate to root permissions;
adb kill-server is to kill the daemon of adb, otherwise, adb still retains the previous Vender information. start-server loads the new Vender information.