Garmin finally delivered a proper OTA‑style beta update (still manual but PC‑free) for the Instinct 2 line, fixing a bug that could disable the solar panel. The fix revives the promise of near‑unlimited runtime on solar‑enabled models, provided users keep power‑hungry GNSS usage low.
Garmin has pushed a new beta firmware (v17.11) for the Instinct 2 family – Instinct 2, Instinct 2 Solar, Instinct 2S, Instinct 2S Solar, Instinct 2X and Instinct Crossover. Each watch receives its own ZIP file that can be copied directly to the device’s internal storage via the Garmin Connect app or the “Garmin Device Manager” on a PC. Unlike previous beta releases, the installer now launches automatically once the file is detected, removing the need to run a separate executable. The process still requires a computer, but the workflow is much smoother and mirrors the OTA experience users expect from other smartwatch ecosystems.
What changed?
The changelog for 17.11 is terse: a single bug‑fix that prevents the solar charging function from being disabled under certain conditions. In earlier builds, the solar panel could stop delivering power after a firmware‑initiated reset or after the watch entered a deep‑sleep state for extended periods. Users reported that the battery would then drain at the same rate as a non‑solar model, effectively nullifying the advertised “unlimited” runtime.
The fix restores the panel’s ability to resume power delivery once the watch wakes, ensuring that the tiny photovoltaic cells continue to top up the 210 mAh (Instinct 2) or 260 mAh (Instinct 2 Solar) batteries during daylight exposure.
How it stacks up against the previous generation
| Feature | Instinct 2 (non‑solar) | Instinct 2 Solar | Instinct 2 Solar + v17.11 fix |
|---|---|---|---|
| Battery capacity | 210 mAh | 260 mAh | 260 mAh |
| Solar panel output (typical) | – | 2‑4 µW/cm² (≈ 10 % daily gain in bright sun) | Same, but now reliably active after sleep cycles |
| Stand‑by life (no GNSS) | 30 days | 30 days + solar boost | 30 days + solar boost |
| GNSS‑active life (continuous) | ~24 h | ~30 h (solar adds ~6 h) | ~30 h (no regression) |
| Price (USD) | $199 | $229 | unchanged |
The only tangible benefit of the new firmware is the re‑enabling of the solar boost that could disappear after a reset. For users who rely on the watch for occasional hikes, day‑trips, or everyday activity tracking, the panel now consistently adds a few percent to the daily charge budget, extending the interval between manual recharges.
Who should care?
- Outdoor enthusiasts who leave the watch on a strap during long treks will notice the difference the most. A reliably active solar panel means a 2‑day hike can be completed without worrying about a dead battery, as long as the watch isn’t constantly in high‑precision GNSS mode.
- Casual users who wear the Instinct 2 Solar for daily step counting and occasional GPS sessions will see a modest improvement in overall battery longevity, but the impact is less dramatic because the watch already lasts weeks on a single charge.
- Power‑savvy buyers who compare the Instinct line to competitors such as the Suunto 9 Peak or Polar Grit X Pro will now have a more level playing field. Those rivals rely on larger batteries (≈ 300 mAh) but lack any solar assistance, so the Instinct 2 Solar can edge them out in low‑usage scenarios.
Practical tips to maximise the solar benefit
- Expose the watch to direct sunlight for at least 30 minutes per day. The panel is small, so indirect light yields only marginal gains.
- Switch to “Battery Saver” mode when you don’t need live GNSS tracking. This reduces the draw from ~30 mA to under 5 mA, letting the solar cells replenish the battery faster.
- Avoid continuous high‑frequency heart‑rate sampling while the watch is charging. The extra sensor load can outpace the solar input.
- Keep the firmware up to date – Garmin’s beta channel now offers a more streamlined install path, and future releases may add true OTA capability.
Bottom line
Garmin’s 17.11 beta may look modest, but it patches a flaw that could completely negate the solar advantage of the Instinct 2 Solar models. With the fix in place, the watch lives up to its marketing claim of “practically unlimited” battery life under realistic outdoor use—provided you manage GNSS usage and give the panel some daylight. For anyone already invested in the Instinct ecosystem, flashing the new ZIP is a quick win; for newcomers, the restored solar reliability makes the Instinct 2 Solar a compelling alternative to bulkier, battery‑heavy competitors.
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