No, there is no upgrade for Reflex XTR to control your Blade 350 QX2. According to the official website, Reflex XTR is compatible with EP CALIBER M24, CALIBER 30, CALIBER 5, CALMATO, FLIP 3D, F-86F SABER, F-16 FIGHTING FALCON, AT-6 TEXAN, GEE BEE RACER, SOARUS, SPITFIRE. There is specified about the possibility that the software support additional products, but it's not specified which ones. This means that the only possibility is to test it.
