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Sigma Rox 12 updated – Sigma Announces new firmware

9 March 2020
the5krunner

Sigma Rox 12 Review

 

Sigma released some new firmware for the Rox 12.0 bike computer last week. Today they have let us know what is in it.

Version 1.20.270 (43325)

Some of the more interesting additions include

  • Faster charging times using 1.5A chargers
  • Improved grade/gradient calculations during your ride
  • AllTrails recently acquired GPSIES and so GPSIES support is removed
  • ROTOR INspider is now supported to access and display OCA and OCP. OCA/OCP is nothing new and is similar data to that produced using Garmin’s Cycling Dynamics. Garmin call it power phase and WattBike has the Polar display (the doughnut thing). One specific use of this data is to determine the correct position of the wider part of an oval chainring to coincide with the point where you produce most power in your pedal stroke – the great thing with ROTOR Q-RINGS (and others) is that the orientation of the oval to the cranks can be varied.

REVIEW: ROTOR INPOWER 3D+ and MAS Spider With Qarbon Qrings – OCP from OCA

 

My Notes on Oval Chainrings

        • I like the performance side of them. They do require a period of change to get used to them.
        • They require cleanliness and precision in the adjustment of the front derailleur. Otherwise, you will be unable to shift properly and/or your chain will often come off. Ultimately I mostly stopped using them because of this.
        • They DO seem to make me notably faster…when the chain is on
        • Well. They do make me notably more powerful. But is that MORE power or incorrect measurement of power by a pedal-based PM and/or by a PM which does not take sufficiently frequent readings throughout the pedal stroke?
        • Assioma pedals claim to support ovals. Powertap too, IIRC.
        • My current TT setup has my last remaining oval. I only have the larger oval ring and a circular inner one. It shifts well with Shimano ULTEGRA

There are also some minor fixes and minor improvements to the Rox 12.0  including

  • Ride start-time correction for summertime.
  • ANT+ sensor data stabilized
  • Data Center RIDE PAUSES now correctly shown
  • Longer WiFi passwords of over 25 characters are now shown

 

Source: sig-inmotion.com

 

Sigma Rox 12 Review ▷ Cycling GPS Bikenav

 

 

 

 

Last Updated on 21 January 2026 by the5krunner

My favourite kit and nutrition

  • Injinji – Runners protect your toes. Avoid discomfort and minor injury. Run more. Run faster. I use them.
  • Garmin 90-degree charging adapter — The small adapter that keeps your charging cables tidy. Essential for race day. I use one.
  • Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session. I use one.
  • Ravemen FR300 — Front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters. I use one.
  • Body Glide – The blue anti-chafe stick that all swimmers and many runners use. I use it.
  • Maurten — The race nutrition trusted by elite athletes. Gels and drink mixes engineered to be easy on the stomach. I use them.
  • Garmin Varia RTL515 — A radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Garmin watch. I use this model.
  • Favero Assioma Pro RS2 — The power-meter pedals most serious cyclists choose. Accurate, easy to move between bikes. I use this model.
  • Garmin Forerunner 970 — A serious choice for a pro-grade triathlon watch. I use this.
  • Polar H10 — My daily driver for accurate, waking HRV readings.
  • Wahoo ELEMNT Roam 3 — The bike computer that has the feature Garmin lacks: usability. I use mine on most rides.

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