Sum firmware update

This software update is dedicated for Sum USB (A1200) and Sum A600 models.

Firmware update v20151017 comes with following changes:
- Apple USB keyboard (USB hub-equipped models) support,
- new F10 option in adapter’s settings that enables displaying selected keys codes,
- new F12 option in adapter’s settings that establishes displaying device settings,
- new R-Shift + F19 Mac keyboard shortcut launching adapter settings,
- improved SHIFT keys support for Pinball series games

Dedicated download for Sum A600 ==> Sum_20151017.7z
Dedicated download for Sum USB (A1200) ==> Sum_20151017.7z