The link to Atmel's flip is broken. It re-directs to http://www.microchip.com/. Please update!
I think this is the correct link. Please verify.
http://www.microchip.com/developmenttools/productdetails.aspx?partno=flip
* [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) (recommended GUI)
* [dfu-programmer](https://github.com/dfu-programmer/dfu-programmer) / `:dfu` in QMK (recommended command line)
-* [Atmel's Flip](http://www.atmel.com/tools/flip.aspx) (not recommended)
+* [Atmel's Flip](http://www.microchip.com/developmenttools/productdetails.aspx?partno=flip) (not recommended)
Flashing sequence: