Mobvoi’s February 2021 firmware PYDA.200427.080.MRB.210114.001 made the TicWatch Pro 3 GPS’s display-edge touch response more reliable and corrected a failure in which tilt-to-wake did not illuminate the Essential Mode backlight. It also fixed an occasional function-key shortcut error and added several Essential Mode, sound, pairing and stability improvements. The update was not Wear OS H-MR2 or Wear OS 3.
Droid Life reported the rollout on February 1, 2021; Mobvoi’s upgrade history records the firmware on February 8, 2021. Those dates describe reporting and the official history, rather than two different updates.
What the February 2021 firmware fixed
More reliable edge touch
The changelog says touch responsiveness was improved near the edges of the display. That addresses the inconsistent swipes and taps some owners encountered around the bezel. “Most annoying bug” is headline framing: Mobvoi listed several fixes and did not rank one as the single worst problem.
Essential Mode tilt-to-wake backlight
In Essential Mode, tilting the wrist could fail to illuminate the backlight. The firmware corrected that behavior under the affected conditions. It also reduced Essential Mode backlight brightness and made tilt-to-wake respond about one-quarter of a second faster.
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Function-key double press
Where Google Pay was supported, double-pressing the function key could occasionally open the wrong app. The update corrected that shortcut behavior. Regional availability, bank support and the software installed on the watch still determine whether a payment shortcut is usable.
Full changelog in practical terms
| Area | Change in PYDA.200427.080.MRB.210114.001 |
|---|---|
| Essential screen | Choose a DD-MM or MM-DD date format. |
| Essential Mode controls | Turn on the backlight with the power button, or disable the automatic backlight. |
| Wake behavior | Faster tilt-to-wake response, by approximately 0.25 seconds, plus the fix for missed Essential Mode backlight illumination. |
| Touch and motion | Smoother scrolling and better responsiveness at the display edges. |
| Sound | Notification sounds became adjustable at Settings → Sound → Ring volume. |
| Pairing | Faster pairing with Android phones. |
| Shortcut | Fixed cases where a function-key double press opened an app other than Google Pay, when that service was available. |
| Stability | Reduced cases in which step totals were partly lost after restarting in Essential Mode. |
| Backlight | Lowered Essential Mode backlight brightness. |
These are changelog claims, not a guarantee that every watch had the same symptom or that every owner will perceive the same improvement.
What this update was not
Not Wear OS H-MR2
The February firmware was a device-level update to the existing TicWatch Pro 3 software. H-MR2 arrived separately and brought broader Wear OS performance work and additional optimization for the Snapdragon Wear 4100 platform. Android Central’s H-MR2 coverage describes that later rollout.
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Not Wear OS 3
Mobvoi’s upgrade history lists Wear OS 3 for the TicWatch Pro 3 GPS and Pro 3 Ultra GPS as version RMRB.231020.007, dated October 20, 2023. The February 2021 build predates that operating-system transition. The history is available at Mobvoi’s Product Software Upgrade History.
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Not a confirmed battery-drain cure
The February changelog does not list a battery-drain fix. Later owners reported severe drain involving combinations of GPS, Wear OS, Google Home, Google Play Services, watch faces and other software; those community reports are anecdotal and do not establish one cause for every watch. A Google Wear OS Community discussion documents the complaint. Do not treat this 2021 firmware as a solution to those later reports.
When and how the rollout reached watches
The model covered by the original announcement was the TicWatch Pro 3 GPS. Droid Life described a staged over-the-air rollout beginning February 1, 2021, with completion expected by February 4; Mobvoi’s official history records February 8. Rollout timing could vary by region and device.
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To check an owner’s watch, use its system-update screen while it is connected to the charger and paired phone. Exact labels can differ between the original Wear OS software and later Wear OS 3 software, so a universal menu path would be misleading. Record the firmware number before and after updating; the target build is PYDA.200427.080.MRB.210114.001.
Post-update verification checklist
These checks mirror the changelog and help identify whether the relevant behavior changed:
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problems- Enter Essential Mode and tilt your wrist repeatedly. Confirm that the backlight illuminates consistently.
- Swipe and tap close to every display edge, not only the center, to check the previously weak touch areas.
- Restart the watch in Essential Mode and compare the step total afterward.
- Double-press the function key. If Google Pay or Google Wallet is supported in your country and configured on the watch, verify that the intended payment shortcut opens.
- Reconnect or re-pair the watch with the Android phone and note whether the process is faster or more reliable.
- Open Settings → Sound → Ring volume and test notification volume.
How the Pro 3 software history continued
| Date | Version or event | Scope |
|---|---|---|
| September 25, 2020 | Launch-era Pro 3 GPS firmware | Initial software and early fixes. |
| February 8, 2021 | PYDA.200427.080.MRB.210114.001 |
Touch-edge, wake, Essential Mode, pairing, shortcut and stability improvements. |
| August 8, 2022 | Pro 3 GPS/Ultra GPS release | Bug fixes and system-stability improvements. |
| October 20, 2023 | RMRB.231020.007 |
Wear OS 3 upgrade for Pro 3 GPS and Pro 3 Ultra GPS. |
| February 28, 2024 | RMRB.240228.002 |
Function-key customization, a February security patch, memory cleanup, Bluetooth-call echo optimization and other fixes. |
The history groups some GPS and Ultra GPS releases while listing LTE models separately. Do not assume that a GPS, Ultra GPS, LTE or Ultra LTE watch received an identical build at the same time.
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What later owners should know about battery and hardware
Mobvoi advertised up to 72 hours in Smart Mode and up to 45 days in Essential Mode for the TicWatch Pro 3 GPS, under the company’s specified conditions and internal testing; those figures are not a promise of current runtime. See the Mobvoi product page for the original claims.
The watch launched in 2020 on Snapdragon Wear 4100 hardware. By 2026, an aging battery is a plausible explanation for short runtime independent of software. An iFixit battery-replacement guide exists, but opening the sealed watch is specialist work and can compromise water resistance. Factory resetting is sometimes suggested in troubleshooting discussions, but it erases user data and should not be a first response to an unproven software theory.
Should you keep, repair or replace a TicWatch Pro 3?
Keep and update
Keeping it is reasonable if the battery remains healthy and you mainly need notifications, basic fitness functions and the dual-display design. This firmware makes the original touch and Essential Mode behavior less frustrating, but it does not make the watch a current-generation platform.
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Consider battery repair only when the rest of the hardware is reliable and you accept the cost, parts uncertainty and risk to the seal. Check charging, display response, GPS, sensors and phone pairing first.
Replace
Replacement makes more sense if you need current Wear OS features, dependable long-term updates, modern app compatibility or a new-device warranty. Mobvoi’s later family includes the TicWatch Pro 5, Pro 5 Enduro and TicWatch Atlas, but current prices and support terms should be checked on the official regional store rather than inferred from the older Pro 3 history. Coverage of Mobvoi’s changing availability appears in Android Central’s report.
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