My Robot Doc

Known issue

YUKA mini: firmware 1.14.2.2304, loud/screeching noise at medium blade speed

Loud, screeching noise at medium knife speed appears after this update.

Status Open

Models
YUKA mini (500/500H, 600/600H, 800/800H) & YUKA mini Vision (700/700H)
First reported
02 Aug 2025
Last updated
03 Sep 2026
Affects
Robot body — not the app
Rolling back from
1.14.2.2304
YUKA mini (500/500H, 600/600H, 800/800H) & YUKA mini Vision (700/700H)First reported 02 Aug 2025Details
Models
YUKA mini (500/500H, 600/600H, 800/800H) & YUKA mini Vision (700/700H)
First reported
02 Aug 2025
Last updated
03 Sep 2026
Affects
Robot body — not the app
Rolling back from
1.14.2.2304

What to do next

  1. Note your current version first. Then check whether the noise is a screech at medium blade speed rather than at low or high speed.

    More about this step

    Applies when: the mower is on 1.14.2.2304 or later.

    Worked if: you know whether what you are hearing matches this release's reported symptom.

    Didn't work? Next: step 2 — Check the deck for the documented mechanical causes before...

    Method: the release thread cited here, against a changelog that does not mention noise

  2. Check the deck for the documented mechanical causes before treating it as firmware: compacted grass under the blade guard, worn blade screws, and a loose disc-retaining nut.

    More about this step

    Applies when: the noise is a grind or a chatter rather than a screech at one specific speed.

    Worked if: a mechanical noise is ruled out before firmware takes the blame.

    Didn't work? Next: step 3 — The release before 1.14.2.2304 is not documented, so there is no...

    Method: this site's own deck-noise guide, which assigns these causes in order of likelihood

  3. The release before 1.14.2.2304 is not documented, so there is no target build to name: ask support instead, and tell us the version string if you can confirm it.

    More about this step

    Applies when: the noise persists after the mechanical checks.

    Worked if: the missing version number gets on record rather than staying unknown.

    Method: this page's own note that the prior version is unknown

Robot body — not the app. See our app vs. firmware vs. RTK guide if you're not sure which one you're dealing with.

On this page
  1. What to do next
  2. What changed in this release
  3. What's been reported
  4. Rollback procedure
  5. Sources
Before you start: confirm your mower's current firmware version and note it down. If this rollback doesn't go as planned, you'll want that number to ask for help.

What changed in this release

Released July 31, 2025. Mammotion's own changelog for 1.14.2.23042 addresses repeated obstacle collisions, a false "1425" startup error, charging voltage reporting, and battery estimates.

What's been reported

A loud, screeching noise at medium knife (blade) speed after this update1, a new symptom not mentioned in the official changelog.

Rollback procedure

Follow the general Android rollback guide.

Prior version not confirmed. 1.14.2.2304 is the earliest documented YUKA mini version. The release immediately before it is unknown. Check the official YUKA mini release notes directly, or let us know if you can confirm it.

Sources

Did this work, or not?

Telling us what happened helps the next owner with the same fault.

Tell us what happened

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