What's needed to add an Osram Lightify bulb to a Philips Hue installation
Old outdated information about EU vs US firmware.
https://www.reddit.com/r/Hue/comments/42840b/howto_make_american_osram_lightify_bulbs/

The firmware is now combined into one compatible version.
Try this, several people report they work: https://recoveringappleholic.wordpress.com/2016/01/23/how-to-get-lightify-to-work-with-hue/

I believe @DanielGriscom was talking out of turn and sharing his thoughts that were based off poor assumptions rather than research.