I am so excited! I got my Vado 4 on April 8th in the US. Since then I've ridden over 1000 miles. But on flat terrain at about 16 mph if I pedal fast, the power cuts out. It doesn't matter what level of power assist there is or how hard I pedal, on flat terrain I can't get my bike past 17 mph.
Well, until today! Based on all of the wonderful info on this thread, I took my bike to the LBS today, got the firmware updated and now I've got a 28 mph bike! My Vado was set up with European speed limiting firmware.
Now it's a totally different bike. Crazy! Took about 3 minutes to update, the motor and display firmware. The mechanic said the battery firmware was correct. I didn't push it. If there's battery issues, then I'l go back.
Unfortunately, there is thunder, lightning and heavy rain right now, so I can't go for a decent ride today. I'm totally bummed. But tomorrow, definitely!
One thing that I was also questioning is that if I turn the power assist to zero, when I pedal the display still shows wattage is being used. The battery level doesn't go down, but it looks like power is being used. The mechanic said it's measuring wattage coming out of the crank, so it's measuring my wattage instead of the motor. Not a big deal, but sort of cool!
Thanks for all of the helpful info everyone!!