er9x: uploading firmware

Here's how to flash the er9x firmware to your Turnigy 9XR.  Basic steps:

(note: after you write the firmware, you will get a throttle alert message.  this is normal, since the calibration settings have been cleared from writing the new firmware.  recalibrate your sticks and all will be well.)

• attach data cable.  You might need to download some drivers -- some notes on this are upcoming.
• download a copy of the firmware from this page: http://code.google.com/p/er9x
• download and install the eepe software on your computer: http://code.google.com/p/eepe
• in eepe, use the "write flash firmware to transmitter" option
• reformat eeprom memory (radio does this automatically)
• recalibrate your sticks and voltage meter