Originally Posted by Crash Survivor
Well Walkera remarks are: 1: Itís necessary to use the UP02 and UP02 adaptor for this upgrade steps.
2: This ugprade software optimized the programe,and improved the stability of the flight.
From what I read is don't waste your money on the UP02 and UP02 adaptor for this upgrade & most could tell no difference & also if you do upgrade it still says you are at version V1.0 not V1.1 so you can't even tell if you were already at the latest firmware or if there even was one.
Some people reported they could do inverted funnels and such after the upgrade. I can't confirm since my skills aren't that good.
Version reported by upgrade tool is the hardware version, which obviously doesn't change.
BTW, you can can UP02 + UP02 adapter for around $12 + shipping from hobbyone.