MAMMOTION OWNER RESOURCES
Mammotion browser Bluetooth and GATT error help
What to check when UnlockMyBot pairs with a LUBA or YUKA but cannot read its identity, reports a GATT error, or stops at Verifying mower identity.
Pairing is one step of the connection
Seeing a mower in Chrome's Bluetooth chooser does not prove the website can read its identity or complete an account-release service. A message such as “Chrome reported a Bluetooth GATT error while finding the mower service” identifies a connection step that failed; it does not by itself establish account binding or a hardware defect.
Browser and device requirements
| Environment | Current guidance |
|---|---|
| Current Chrome on Windows, macOS or Android | Intended browser environments. Bluetooth must be enabled and permitted by the operating system. Support for Web Bluetooth does not establish successful testing of every mower, browser version or Bluetooth adapter. |
| Chrome on Linux | Experimental Web Bluetooth environment. Do not assume service compatibility. |
| iPhone / iPad browsers | Not supported for this Bluetooth service. |
We do not publish a blanket “tested on every Chrome version” claim. If you need confirmation for a specific computer or phone, contact support before purchasing and include its operating system and exact Chrome version.
Check these before one fresh connection attempt
- Keep the mower powered on and nearby. Use the exact supported device you intend to service.
- Enable Bluetooth and allow Chrome Bluetooth access in the operating system's permissions. Reopen the service link in current Chrome if you were using another browser.
- Close other mower sessions, including the Mammotion app and other browser tabs that may be connected to this mower.
- Reload the service page, use its Connect action and select the correct mower in the browser's chooser. Keep that page open while the identity is read.
- If the same step fails again, stop and contact support with the details below. Do not repeatedly submit an account-release request when its outcome is uncertain.
What the displayed stage tells us
- Connecting to the mower: Chrome has not completed the Bluetooth connection. The website has not reached the mower's Wi-Fi or identity checks. Changing Wi-Fi will not resolve this stage by itself.
- Finding the mower service: the browser did not complete access to the required Bluetooth service.
- Opening the request or response channel: a communication channel could not be opened.
- Verifying mower identity: identity verification has not completed. Pairing alone is not a verified identity.
- Timed out or disconnected: the operation did not complete within its limit or the Bluetooth connection ended.
- Another Bluetooth operation is using this mower: let the current read or setup finish before starting another action.
A connection error is not a reason to factory-reset the mower, flash firmware or buy a replacement motherboard. Diagnose the connection and account state first. For troubleshooting within Mammotion's own app, use its official Bluetooth troubleshooting guidance; app behavior and browser behavior are separate.
Send useful support details
Email admin@grandiose.systems with the model, order number if you have one, exact error and failing stage, operating system version and Chrome version (Chrome menu → Help → About Google Chrome). If the page supplies Bluetooth support details, include that text.
Keep private service links, mower authentication secrets and payment-card details out of public posts. If a release request was already sent and the result is held for review, wait for support rather than starting another request.
Mac: collect connection logs for support
UnlockMyBot cannot read Chrome's internal logs or your macOS Bluetooth logs. Full Chrome and macOS logs remain on your Mac unless you choose to share them; this page does not upload them automatically.
- Keep your private service page open. In another tab in the same Chrome profile, type
chrome://device-loginto the address bar and press Return. - Set Log level to Debug and filter to Bluetooth.
- Return to the service page and make one Connect mower attempt. Stop before Start account service; collecting these connection logs does not require an account-release request.
- Return to the log tab and copy the entries around the failure, including their timestamps. Include the Bluetooth support details and exact error from the service page.
- Open Apple menu → About This Mac and note the exact macOS version and whether the Mac uses Intel or Apple silicon. Also copy the full version from Chrome menu → Help → About Google Chrome.
Share the relevant entries privately with support through the original sale channel: eBay Messages for an eBay purchase, or admin@grandiose.systems for a website purchase. Review what you copy and keep private device details out of public posts.
These steps use Chromium's official Web Bluetooth logging guidance. More detailed Mac logs may be needed later; support can advise after reviewing this first connection attempt.
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