I was a little surprise that a new firmware was already available to download. Initially, my brand new KX2 was at firmware version 2.57.
So as usual, the firmware upgrade process went smoothly.
KX2 Firmware Information
KX2 MCU 2.59 / DSP 1.39, 5-5-2016
* INITIAL PRODUCTION FIRMWARE RELEASE.
Not much information for now on what it has been corrected or enhanced.
Jeff | VA2SS