2 Arris lift drones need texh support I had an open line of Communication with AMY arris Technician in China, but now will not reply to any of my messages. Willing to pay for support. Help please Drone 1 – Firmware Updated Per Arris Instruction Background: Arris authorized and instructed that the flight controller firmware be updated to PX4 v1.15.4, which was performed successfully. Result: Compass calibration does not start GPS never achieves 3D lock Motors do not respond after arming ESC calibration fails CUAV’s Determination: The firmware update erased all original integration parameters This included essential settings for PWM outputs, compass/GPS assignments, airframe setup, failsafes, and more CUAV confirmed their hardware is functional but cannot operate due to missing configuration Key Point: Although Arris approved the firmware update, they did not provide a backup .param file, leaving the system without its required custom settings. Next Steps: CUAV instructed that functionality can only be restored by: Reinstall