Per what you downloaded, in the last line of the text, it states the required firmware

PPENG v2.1.8 For use only with the Philips ProntoPro NG color remote control. Changes to this version include a fix for issues that occurred occasionally when labelling objects, plus other changes made earlier: support for the TSU7500, improved performance and stability (files load up to 30 times faster); new shortcut keys and menus; graphical linking and improved button-to-button copying; button alignment and spacing tools; JPG support; redesigned IR code screens with IR duration; image extraction; plus other usability improvements. Requires firmware v3.8.16 or newer.

To check the firmware on the remote, press and hold the TOOLS button (remote icon at top of screen) for at least 3 seconds.

Lyndel