Garmin and Wahoo Bugs June 2026: Six Issues Tracked

The week ending 12 June 2026 brought a wave of confirmed firmware problems across Garmin and Wahoo devices, and if you run, ride, or race on either platform, some of these will hit close to home. The issues range from broken overnight recovery metrics to GPS week rollover faults on legacy Wahoo hardware, and none of them are minor inconveniences when you're mid-training-block.

Garmin: Six Confirmed Bugs Across Key Features

The Morning Report and Body Battery overnight faults are the ones that sting the most for endurance athletes. Body Battery pulls from heart rate variability data collected by the optical PPG sensor on your wrist throughout the night, and when the firmware misreads or drops that data stream, you wake up to a flat or nonsensical score. For athletes using this as a daily readiness signal alongside something like Whoop's strain and recovery model, a broken Body Battery reading is not a minor glitch. It's a missed training cue.

PacePro freezes are a real problem for runners who race to a target time. PacePro calculates grade-adjusted pace splits in real time using GPS position and barometric altimeter data (air pressure changes, not optical) to account for elevation. When it locks up mid-race, you lose your split guidance entirely. The Garmin Fenix 8 and Forerunner 965 both run PacePro, and users on the5krunner forums reported freezes after the latest firmware push. Garmin has acknowledged the issue. No confirmed fix yet as of this writing.

Running dynamics showing zeros is another fault reported this week. Running dynamics data (ground contact time, vertical oscillation, stride length) typically comes from a chest strap like the HRM-Run or HRM-Pro Plus, which uses accelerometers and the ANT+ connection to transmit motion data. When the watch displays zeros, the issue is usually in that data handshake, not the strap's sensors themselves. Worth checking your ANT+ pairing before assuming a hardware fault.

Garmin Express detection failures and map update errors are more of an annoyance than a training blocker, but for cyclists loading new routes onto an Edge 1050 or Edge 840, a failed map update before a sportive is genuinely disruptive. Sleep logging errors post-firmware are also confirmed, with some users seeing missing or duplicated sleep stages. Full details on all six Garmin issues are in our dedicated tracker: [Garmin Firmware Bugs in 2026: Six Issues and Confirmed Fixes](/en/articles/garmin-firmware-bugs-in-2026-six-issues-and-confirmed-fixes-2026-06-14).

Wahoo: GPS Week Rollover and Lock Issues on Older Units

The Wahoo problems this week are different in character. The August 2025 GPS week rollover issue affecting ELEMNT, BOLT 1, and ROAM 1 is a known structural problem in older GPS chipsets. GPS satellites broadcast a week number that rolls over every 1,024 weeks (roughly 19.7 years), and devices with outdated firmware can misinterpret the new epoch, causing position errors or total GPS failure. Wahoo's first-generation ELEMNT lineup is exposed here. If you're still on a BOLT 1 or ROAM 1, check your firmware version immediately.

Slow GPS lock on Wahoo units has also been reported more frequently post-rollover. This is about time to first fix, meaning how long the device takes to pull a reliable satellite signal before a ride. A Garmin Edge 1050 with SatIQ and multi-band GPS typically locks in under 30 seconds in open conditions. Some ELEMNT users are reporting two to three minutes, which kills the pre-ride flow. The rerouting behavior on affected units is an additional headache for cyclists doing structured navigation rides. A full cross-platform view of what's broken and what's patched is in our [Garmin and Wahoo Known Bugs: June 2026 Fix Tracker](/en/articles/garmin-and-wahoo-known-bugs-june-2026-fix-tracker-2026-06-18).

What's missing from both brands right now is faster communication. Garmin's support pages updated slowly, and Wahoo's rollover documentation took weeks to surface clearly. Polar and Coros have both been quieter on the firmware front this month, which either means cleaner code or fewer users reporting. Probably some of both.

Bottom line: if you race on a Garmin Forerunner or Fenix and rely on PacePro or Body Battery, hold off on the latest firmware update until Garmin confirms a fix. Wahoo BOLT 1 and ROAM 1 owners need a firmware update now, not later. The ELEMNT BOLT 2 and ROAM 2 are not affected. If you're shopping right now, the Coros Pace 3 at $229 and the Garmin Forerunner 265 at $449 are both running cleaner firmware cycles than their flagship siblings this month.