Editing Converting NerD60 to TMK (section)

===Flash the new bootloader===
* To this point we didn't do anything to the keyboard, after the next step you won't be able to use GONs software to program your board, this is the point of no return (during the programming the Red LED will light up on the programmer).
* I have used the standard ''ATMega32U4-usbdevice_dfu-1_0_0.hex'' bootloader image from ATMEL web site ( http://www.atmel.com/devices/ATMEGA32U4.aspx ).

    user@liz:~/Software/Teensy$ avrdude -p m32u4  -c usbasp -U flash:w:ATMega32U4-usbdevice_dfu-1_0_0.hex -P /dev/USBasp
 
    avrdude: AVR device initialized and ready to accept instructions
 
    Reading | ################################################## | 100% 0.01s
 
    avrdude: Device signature = 0x1e9587
    avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
             To disable this feature, specify the -D option.
    avrdude: erasing chip
    avrdude: reading input file "ATMega32U4-usbdevice_dfu-1_0_0.hex"
    avrdude: input file ATMega32U4-usbdevice_dfu-1_0_0.hex auto detected as Intel Hex
    avrdude: writing flash (32768 bytes):
 
    Writing | ################################################## | 100% 0.00s
 
    avrdude: 32768 bytes of flash written
    avrdude: verifying flash memory against ATMega32U4-usbdevice_dfu-1_0_0.hex:
    avrdude: load data flash data from input file ATMega32U4-usbdevice_dfu-1_0_0.hex:
    avrdude: input file ATMega32U4-usbdevice_dfu-1_0_0.hex auto detected as Intel Hex
    avrdude: input file ATMega32U4-usbdevice_dfu-1_0_0.hex contains 32768 bytes
    avrdude: reading on-chip flash data:
 
    Reading | ################################################## | 100% 0.00s
 
    avrdude: verifying ...
    avrdude: 32768 bytes of flash verified
 
    avrdude: safemode: Fuses OK (E:C3, H:D8, L:DF)
 
    avrdude done.  Thank you.


* OK, now you are the lucky owner of a keyboard with a bootloader LOL , you can plug in the keyboard in USB port and see that it is recognized by the system. The controller is in DFU mode:

 [ 5564.032173] usb 1-1: USB disconnect, device number 14
 [ 5565.960092] usb 1-1: new full-speed USB device number 15 using uhci_hcd
 [ 5566.141092] usb 1-1: New USB device found, idVendor=03eb, idProduct=2ff4
 [ 5566.141095] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
 [ 5566.141097] usb 1-1: Product: ATm32U4DFU
 [ 5566.141099] usb 1-1: Manufacturer: ATMEL
 [ 5566.141100] usb 1-1: SerialNumber: 1.0.0