Here is how to reconfigure the FTDI EEPROM in the Arduino Nano for a sensible Udev Rule
NB, see README.WARNING.txt

1. By default, the values are non-ideal:
   Get current info with:
	sudo lsusb -vvv -d0x403:0x6001
 
   The relevant bits are:
	idVendor 	  0x0403
	idProduct 	  0x6001
	iManufacturer     FTDI
	iProduct          FT232R USB UART
	iSerial           A700fmiq
        MaxPower          90mA


2. Read the eeprom, to save a copy. Need a basic config file for ftdi_eeprom: ftdi_eeprom_read.conf
	sudo ftdi_eeprom --read-eeprom ftdi_eeprom_read.conf
	NB this seems to need ctrl-C after a few seconds to make it terminate.

3. Reconfigure the eeprom to change it as we want: [keep Serial number, change Product to "ARDUINO NANO",
   and increase power to 500mA.] Write new config file: ftdi_eeprom_write.conf
   	sudo ftdi_eeprom --flash-eeprom ftdi_eeprom_write.conf
	(Again; ctrl-c eventually)

4. Unplug/Replug (otherwise only some updates appear to take effect), and rerun sudo lsusb -vvv -d0x403:0x6001
	iProduct    ARDUINO NANO
	MaxPower    500mA

5. Append udev_fragment to /etc/udev/rules.d/10-local.rules
   (derived from: udevadm info --query=all --name /dev/ttyUSB0  --attribute-walk )

6. Result: symlink called: 
	/dev/arduino_nano_A700fmiq


