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.