adb devices return nothing

Hi guys,

I am looking to get access to file system of my LEM X but adb devices returns anythings. On my machine the smartwatch is recognized though:

[189503.526390] usb 1-2: new high-speed USB device number 31 using xhci_hcd
[189503.666901] usb 1-2: New USB device found, idVendor=0e8d, idProduct=2008
[189503.666903] usb 1-2: New USB device strings: Mfr=3, Product=4, SerialNumber=5
[189503.666904] usb 1-2: Product: LEMX
[189503.666906] usb 1-2: Manufacturer: MediaTek
[189503.666907] usb 1-2: SerialNumber: 0123456789ABCDEF
[189509.586472] usb 1-2: USB disconnect, device number 31
[189510.514491] usb 1-2: new high-speed USB device number 32 using xhci_hcd
[189510.655198] usb 1-2: New USB device found, idVendor=0e8d, idProduct=2008
[189510.655200] usb 1-2: New USB device strings: Mfr=3, Product=4, SerialNumber=5
[189510.655201] usb 1-2: Product: LEMX
[189510.655202] usb 1-2: Manufacturer: MediaTek
[189510.655204] usb 1-2: SerialNumber: 0123456789ABCDEF
$ adb devices
List of devices attached

My udev rules is sat as it:

$ cat 52-LEMFOX.rules 
SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", MODE="0660", GROUP="plugdev", SYMLINK+="android%n"