Turbo como 2.0 firmware 7.1.1 slowed bike considerably

[ta373]

Brought my wife’s bike in for brake service and they updated the firmware to 7.1.1.

The bike is now roughly 2 miles an hour slower at the top end. It used to be that it would “surf” with the assist helping up to 20-20.2 mph easily, with moderate effort in the top gear.

Now with the same amount of effort in the top gear in the system is turned all the way on we’re lucky if we get 18 mph. Not sure what happened.

Has anyone had a similar experience after the update to 7.1.1?

 

[Marcela]

Brake service….going slower….brake service…..going slower….something there, can’t quite put my finger on it…..

 

[ta373]

Will check for any unusual rolling resistance.

 

[ActionJackson]

resistance

Becomes excess heat (a significant amount) on a dragging brake, at least on aircraft. I’m pretty sure the same physics apply on a bicycle.

 

[ta373]

Turns out we weren’t crazy.

Direct from the Mission Control app -
7.1.1 isn’t a standard firmware. Looks like our LBS may have mis-loaded the firmware.

Buzzkill, but at least there’s a reason.

Does anyone know the correct current firmware for a 2018 Como
2.0? I have a feeling I might need to be specific with the LBS.

 

[Stefan Mikes]

Paying a visit to the LBS and asking them to check the current speed limiter value could be reasonable.

 

[ta373]

Bike shows 20MPH, but also doesn’t seem to have firmware that is compatible with its motor beyond 7.1.1

So it’s got a non-customer facing firmware for the motor and no way to get it off.

Is it possible to be downgraded?

 

[Stefan Mikes]

Bike shows 20MPH, but also doesn’t seem to have firmware that is compatible with its motor beyond 7.1.1

So it’s got a non-customer facing firmware for the motor and no way to get it off.

Is it possible to be downgraded?

What do the LBS people say?
For instance, my Vado is a very specific model, and there are no upgrades for the motor software available (very good!)

 

[ta373]

Turbo studio shows no updates available. That said they do show that certain motors can’t go beyond 7.1.1 currently.

The software mentioned that ALU motors aren’t currently updatable to anything beyond 7.1.1. So it sounds like a case where the release notes and the nitty gritty details conflict.

Speed showed limited to 20MPH, and wheel circumference was set to stock values - 2190mm I believe.