improved
fixed
C31
C31 Release Notes 2026.03.16
(Aircraft firmware and App must be upgraded together)
Aircraft Firmware
3.40.1.12.ceres5
Remote Controller App
3.1.1.1.ceresair
New Features & Improvements
- Droplet Size Standard Update
The droplet size names and ranges in the App have been updated to comply with international standards:
ASABE S572 & ISO 25358
- U.S. Region Altitude Limit
For the U.S. region, the maximum flight altitude is limited to:
400 ft AGL (399.9 ft / 121.9 m)
- Maintenance Reminder Disabled
The maintenance reminder feature has been disabled.
- Route Adjustment Optimization
Route adjustment precision has been improved.
- Previous precision: 1°
- Current precision: 0.5°
- Spray System Safety Adjustment
For model C31, the minimum horizontal distance required to force spray start has been set to: 0
- Low Battery Warning Optimization The trigger conditions for Low Battery Warning and Critical Low Battery Warning have been optimized. When the remote controller is in the locked state, these warnings will not be triggered.
- Safe Spray Start Distance Configuration The safe spray start distance can now be configured.
- Default value: 15ft
- Adjustable range: 0–30ft
Allows users to configure the distance from the takeoff point before the spray system begins rotating, preventing spraying too close to the operator.
- Improvements to the wording of some feature descriptions.
Bug Fixes
- Range Display Issue
Fixed an issue where the displayed range did not match the actual configured range.
- CeresAir Platform Map Display
Fixed an issue where U.S. map blocks planned on the CeresAir platform were not displayed on the remote controller.
- Droplet Size Adjustment Notification
Improved the interaction logic when adjusting spray droplet size, including:
- Added voice notification
- Added text confirmation message