I succesfully put the firmware on an Arduino Mega, but it is not recognised by the system.
I followed all the steps in https://www.domoticz.com/wiki/PersistentUSBDevices, but I still do not have a /dev/ttyUSB0 device.
The device is visible:
And I addded this line to /etc/udev/rules.d/99-usb-serial.rules:udooer@udoo:~$ lsusb -t
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ci_hdrc/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 2: Dev 3, If 0, Class=Vendor Specific Class, Driver=, 12M
|__ Port 3: Dev 4, If 0, Class=Vendor Specific Class, Driver=rt2800usb, 480M
still no luckSUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", ATTRS{devpath}=="1.2", SYMLINK+="ttyUSB-arduino1"