Changelog

Follow up on the latest improvements and updates.

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Applicator View

Applicator View v1.0.6 Release

1. Field edge-length labels
When you select or edit a field, the length of every boundary edge is now labelled directly on the map, following your unit preference (m/ft) and covering both outer and inner rings. Hover over an edge to slide out a CAD-style dimension line that reads out that edge's length. Edges too short to read are automatically hidden as you zoom out to avoid clutter. Toggle it on/off anytime from the Layers panel.
  • edge-length labels
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  • hover dimension line
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2. Batch share fields
Select multiple fields at once and share them to another user by email in a single action. Sharing is copy-based — it never touches your own field data — and results are reported per field, so a partial failure clearly shows exactly which fields didn't go through.
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3. Improvements
Batch action panel animation
The bottom batch action panel now expands and collapses with a smooth, springy slide (with a subtle bounce), replacing the previous abrupt pop.
Software Versions
UAV Firmware
  • 3.53.0.4 (C31, HD580 2025, C6)
  • 3.47.1.20 (HD580 2026)
App
  • 3.6.4.1.ceresair
Repeater
  • 1.0.0.25
Charger
Battery
  • 1.1.2.0
New Features & Improvements
  1. Turn and Boundary Flight Efficiency Optimization
Improved turning efficiency and boundary flight performance, resulting in smoother flight paths, reduced unnecessary deceleration, and significantly higher operational efficiency, especially in fields with frequent turns or complex boundaries.
  1. Transfer Route Altitude Setting
Added a new transfer route altitude setting option.
Users can select either:
Working Altitude, or
Departure/Return Altitude
for transfer routes, providing greater operational flexibility and improved safety.
Definitions:
The route between the Home Point and Transfer Point #1 is defined as the Departure/Return Route.
The route between Transfer Point #1 and the working area is defined as the Transfer Route.
  1. Turn Performance Optimization
Optimized deceleration and lane-change turning performance to improve flight smoothness, increase turning speed, and improve flow-rate control accuracy, resulting in more consistent spray application.
  1. Prescription Map Support
Added Prescription Map functionality for variable-rate spraying and spreading operations, improving application precision while reducing chemical consumption.
  1. Repeater Support
Added support for wireless repeaters, improving communication range and reliability in environments with signal obstructions.
  1. Battery Firmware Update
Updated battery firmware and resolved the battery charging upper-limit issue.
  1. Charger Connectivity Optimization
Improved wireless connectivity between the charger and remote controller.
  1. Software Stability Improvements
Resolved several known software defects and App crash issues to improve overall system stability and user experience.
  1. Firmware Upgrade Reliability
Improved UAV firmware upgrade reliability and resolved certain upgrade failure issues.
Known Issues / Beta Features
The following feature is currently under development, validation, and Beta testing:
Intelligent flight planning and battery endurance optimization, including smarter route generation, improved mission sequencing, and higher overall operational efficiency.
Internal testing has already shown promising improvements in flight smoothness, operational efficiency, and overall productivity. These enhancements will continue to be refined and validated in upcoming releases.
Important Notes
Version Compatibility
To ensure proper operation, the following components must be upgraded together:
Charger ↔ Battery
UAV Firmware ↔ App
Failure to keep versions synchronized may result in feature incompatibility, abnormal functionality, or unexpected system behavior.
Battery Firmware Upgrade Process
Battery firmware is included in the UAV firmware package.
After upgrading the UAV firmware, the aircraft will automatically detect any connected battery running an older firmware version and perform the battery firmware upgrade.
Please allow the battery firmware upgrade to complete before operating the aircraft.
Operational Notes
  1. New Turning Behavior
Turning performance has been significantly improved, making turns much smoother and faster. During turns, the aircraft now performs coordinated lateral movement instead of simply pivoting in place.
If the Home Point, Transfer Point, and working area are located very close together, the aircraft may appear to sway or rock while transitioning between them. This is a normal characteristic of the new flight logic and does not indicate a flight control issue.
  1. Boundary Flight Speed
Boundary flight speed can now be set much higher (for example, 40 mph).
However, when a boundary contains sharp 90-degree corners with a high density of mapped boundary points, the aircraft may temporarily overshoot the planned boundary due to its higher flight speed and turning momentum.
This is not a loss-of-control condition. To avoid overshooting the boundary in these situations, we recommend reducing the boundary flight speed when operating in fields with tight corners or densely mapped boundary points.
Future firmware releases will further optimize this behavior, allowing the aircraft to negotiate these complex boundary sections more smoothly.
Upgrade Recommendation
For the best performance, reliability, and access to the latest features, we strongly recommend upgrading all system components to the versions listed in this release.
Improvements & Fixes
  1. Fixed an issue where the charger could incorrectly report "Short Circuit Protection" or trigger overcurrent protection during charging.
  2. Fixed an issue where charging inrush current could cause the generator to surge or output undervoltage, resulting in the charger entering protection mode.
  3. Fixed a hardware protection issue where SRMOS failure in the power stage could short the battery and potentially cause component damage.
  4. Added support for Battery Pack Serial Number (PACK SN) configuration.
  5. Fixed an issue where the charger could not be activated.
Upgrade Notes
  • Power the charger using the generator power cable during the firmware upgrade.
  • Before starting the upgrade, verify that all power modules are powered on:
  • * 9 kW charger: Both power modules must be powered.
  • * 12 kW charger: All three power modules must be powered.
  • Do not insert a battery into the charger during the firmware upgrade.
  • After the firmware upgrade is complete, restart (power cycle) the charger before use.
1. Added Split Field
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2. Flight Records: Batch Export to FAA Standard CSV Files
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  • Added functionality to allow custom correction of non-standard regions within field boundary files during the import process.
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  • Bugs fixing
The C31 has now been pushed with a mandatory firmware update(6/6/2026):
  • UAV Firmware: 3.49.7.1
  • App Version: 3.5.8.2.ceresair
If your aircraft and remote controller have already been upgraded to these versions, there will be no impact on your operations.
However, if your aircraft or remote controller is running an older version, the aircraft will not be allowed to take off until the upgrade is completed.
Please check and complete the upgrade before going to the field to avoid delays in your operation.
If you encounter any issues during the upgrade process or have any questions, please contact
Ceres Technical Support
for assistance.
Thank you for your continued support.
1. JD Operations Center
  • Integrations page: authenticate your account and organization.
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  • Field Management page: select Import Fields > Cloud > John Deere, choose the fields, configure the Conflict Strategy, and import the fields.
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2. Add Prescription Maps Module
  • Users are enabled to configure customized application rates and droplet sizes for segmented zones in fields.
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  • The system supports imports of GeoJSON files and DJI proprietary prescription map formats.
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3. Supports continuous sequential playback for multiple flight records
4. Optimize overall User Experience.
5. Bugs fixing
Release Note
Supported Models
  • C31, HD580 2026, C6
Supported Remote Controller
  • HD402
Version Information
Aircraft Firmware Version
  • 3.49.7.1
Remote Controller / App Version
  • 3.5.8.2.ceresair
Main New Features
  1. Improved Drone Mapping and Field Survey Functions
  • Enhanced drone trajectory mapping and field surveying capabilities
  1. Optimized Terrain Following and Obstacle Avoidance Functions
  • Improved terrain-following performance
  • Enhanced obstacle avoidance behavior and flight stability
Fixes for Some Known Bugs:
Resonance Protection Optimization
BMP Barometer Abnormal Protection
C6 Takeoff / Return-to-Home Speed Issue
Spray System Accuracy Issue
New Features
  1. Added upgrade progress display during module updates
  2. Added charging level control: Charging limit can be set from 80% to 100%
  • a.
    After reaching the selected charging level, charging will not stop completely and will continue with a very small maintenance current
Bug Fixes
  1. Fixed issue where the three-module charger could not properly support 12kW charging
Known Issues
  1. After upgrading, there is a small chance that one module may show a red indicator light and fail to operate normally
Upgrade Notes and Precautions
  1. The generator power cable must be used to ensure that:
  • a.
    All 3 internal power modules of the 12kW charger, or
  • b.
    Both internal power modules of the 9kW charger
Are powered on and operating normally. You can verify this from the side of the charger. Each internal module should have a
flashing green LED
indicator.
Using the standard household power cable may result in only one module operating, which can cause the upgrade to fail.
  1. No battery may be connected during the upgrade process.
  2. Even after the App shows that the upgrade is complete or the charger restarts and displays firmware version V1.5.3.2us, the internal power modules may still be updating.
The upgrade is only fully completed when:
  • a. The progress bar on the charger display reaches 100%
  • b. Three green module indicators appear in the upper-left corner of the display
If any module indicator
appears red
, it means the upgrade failed or that module was not powered on during the upgrade.
  1. The entire upgrade process may take up to 15 minutes.
This update includes firmware upgrades for the internal power modules, which requires more time than normal. Future upgrades after this version should typically complete within 1–2 minutes.

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Batteries and Chargers

Charger Firmware Update v1.5.2.7us

  1. Added battery configuration recovery function for 38Ah batteries
  2. Fixed the issue of slow current ramp-up speed
  3. Optimized and resolved the system freezing issue
  4. Fixed other known bugs
  • Precautions:
Ensure no battery is connected to the charger during the update.
Use the generator AC power cable during the update to make sure all three internal power modules are energized.
After the update is complete, disconnect the AC cable and restart the charger.
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