If you're unable to find the software on the manufacturer's website:
https://support.cv950x.com/ (requires registered account with an OEM contract)CV950XH-C42_UPD_v2.2.0_full_signed.zipa3f8c20d1b5e6c7d8e9f0a1b2c3d4e5f6789a0b1c2d3e4f5a6b7c8d9e0f1a2b3Before downloading any firmware, verify your board’s hardware specifications to ensure compatibility: Operating System: Android 7.1 Nougat. CPU: Quad-Core 1.5 GHz Cortex-A53. GPU: Penta-core ARM Mali-450 MP. Memory: 1 GB RAM and 8 GB eMMC Storage. Cv950xh-c42 Software Download -UPD-
If you see a date from 2023 or 2024, you have not installed the -UPD- version. Repeat the process, ensuring you fully uninstall the old driver first. General Advice on Software Downloads