i got a arduino uno a couple years ago back when version 1.0.6
and i decided to upgrade to 1.6.8 thinking it would handle the 9 bit serial without errors
so i tried to upgrade the bootloader ( witch i think is pre installed when you get the board)
Arduino: 1.6.8 (Mac OS X), Board: “Arduino/Genuino Uno”
/Users/username/Downloads/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Users/username/Downloads/Arduino 2.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cstk500v2 -Pusb -e -Ulock:w:0x3F:m -Uefuse:w:0x05:m -Uhfuse:w:0xDE:m -Ulfuse:w:0xFF:m
avrdude: Version 6.0.1, compiled on Apr 14 2015 at 16:30:25
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is “/Users/username/Downloads/Arduino 2.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf”
User configuration file is “/Users/username/.avrduderc”
User configuration file does not exist or is not a regular file, skipping
Using Port : usb
Using Programmer : stk500v2
avrdude: usbdev_open(): did not find any USB device “usb”
Error while burning bootloader.
the device is connected as i can compile and upload the sample codes .
is this one of the fake boards (yes there was a time when fake arduinos came out)?
how do i check for genuineness ?
i also tried burning bootloader from 1.0.6 and got the same error