A key that would make such a firmware "better" than prior versions is:
Whether you are flying drones or streaming movies, the V2.2/V22 firmware cycle was designed to fix long-standing hardware-software communication bugs. q6x+v22+firmware+better
Unlock up to 14 channels on a radio that originally shipped with only 6 or 10. For Media Streamers: The X96 Mini (Q6X V2.2) Board If you’re technical enough to open your X96 Mini TV Box , you might see A key that would make such a firmware