Fenix 8, Edge 850, Suunto Race 2: Bug Fix Roundup August 2026

Eighteen bugs logged in a single week. That is the current state of firmware across Garmin, Suunto, and Wahoo as of 21 August 2026, and it deserves a straight look at what is broken, what is fixed, and what it means for athletes heading into fall race season.

Suunto Race 2 and Vertical 2: Pool Swim Data Corruption

The most damaging issue on the Suunto side involves pool swims on both the Race 2 and Vertical 2 saving 596-hour interval records instead of actual lap data. To be clear about what is happening here: neither watch uses electrical impulse sensing in the pool. Both rely on optical PPG sensors on the wrist and accelerometer-based stroke detection algorithms. When the stroke detection misfires, the firmware can misclassify session segments, and in this case it is inflating interval duration by several orders of magnitude. Suunto has not pushed a patch as of this writing. If you are a triathlete using either watch for structured swim training, log sessions manually until a fix lands. Compare this to Garmin's Forerunner 965 or Fenix 8, where pool swim reliability has been stable across the last three firmware cycles.

Garmin Fenix 8 and Edge 850: Map and Gesture Failures

The Fenix 8 Cannot Unlock Maps error appears specifically after interrupted firmware updates. The watch uses GPS satellites for positioning and a barometric altimeter using air pressure for elevation, neither of which are affected here, but a corrupted map partition kills navigation entirely. The fix requires a full map reinstall via Garmin Express, which takes 40 to 90 minutes depending on the region pack. Not ideal the night before a race. Separately, false palm gesture detection on the Fenix 8 AMOLED is triggering unintended screen wake and workout pauses during cycling, particularly in an aero position. Garmin has acknowledged this but has not issued a targeted patch yet.

On the Edge 850, two distinct problems surfaced. Route calculation is crashing when the device loads corrupt TopoActive map tiles, and voice prompts are ignoring the mute control entirely, which is a serious annoyance during group rides or indoor trainer sessions. The radar page gating issue on the Edge 1050 is separate: certain menu paths lock the radar overlay behind a confirmation screen that resets after each power cycle. None of these are sensor-physics failures. These are firmware logic errors, the kind that surface when software ships faster than QA can validate edge cases.

Wahoo's ELEMNT line has its own headache this week. Map downloads are stalling mid-transfer over Wi-Fi, requiring users to switch to a wired connection or retry multiple times. Wahoo's map ecosystem is narrower than Garmin's, so when downloads fail, there is no offline fallback in the same way a pre-loaded Garmin unit would handle it. For cyclists who rely on ELEMNT for navigation on long audax or gravel routes, this is not a minor inconvenience. Our [August firmware roundup](/en/articles/garmin-wahoo-suunto-firmware-bugs-august-2026-roundup-2026-08-15) from the week prior flagged early signs of instability across all three brands, and this week confirms that trend.

The Suunto Climb Guidance grey segments issue rounds out the Suunto problems. Grey segments in climb guidance typically indicate the watch cannot calculate a valid grade or distance target, often because of missing or low-resolution elevation data from the barometric altimeter cross-referenced with GPS track data. For trail runners and Hyrox athletes using incline treadmill blocks, this makes the feature functionally useless in certain conditions. Suunto's climb tools have historically lagged behind Garmin's ClimbPro and Coros's similar implementation on the Apex 2 Pro, and this bug widens that gap further.

What Is Still Missing Across the Board

What is frustrating is not any single bug but the pattern. All three brands pushed firmware in the two weeks prior, and all three are now dealing with regressions that affect core athletic use cases: swim logging, navigation, and audio feedback. Garmin has the largest QA infrastructure in this space, yet the Fenix 8 map issue and the false gesture detection slipped through. Wahoo, which has a much smaller device portfolio, arguably has less excuse for a Wi-Fi download failure. Suunto's 596-hour interval bug is the most objectively harmful to training data integrity, and it has no public fix timeline.

The Fenix 8 remains the most capable multisport watch in this roundup when it is working correctly, and the Edge 850 is still the strongest mid-range cycling computer for routing. But if you are deep in a training block right now and dependent on accurate pool swim data, the Suunto Race 2 is not your friend this week. Check [the latest Garmin hardware rumors](/en/articles/garmin-fenix-9-edge-1060-lte-microled-august-2026-rumor-roundup-2026-08-22) if you are weighing a new purchase, because timing your buy around a Fenix 9 launch could matter more than waiting for these patches.