TTN UNO - BETA release - Documentation

Thanks @JamesC,
I've just successfully updated the firmware, device shows RN2483 1.0.0 Oct 23 2015 14:46:12 created. Set speed to 19200, first attempt ('normal mode') failed, reconnected the device (disconnect first, restart LoRa.jar and connect USB after the GUI started), scan in 'Bootloader Mode' showed the device, again set to 19200 and upload firmware.
Im using a generic (cheap) Chinese USB to serial dongle with Silicon Labs CP210x. Just RX, TX and ground connected.