Yes it's 8.1. I use a A95X Max 4K Android TV box Android 8.1 Oreo
2.5″ HDD/SSD Bay for Expandable Storage
4K UltraHD Video Output
4GB RAM / 64GB Storage
Dual-Band Wi-Fi w/ 1GB/s Ethernet Adapter RJ45 Port
The only thing i can see in the ProgTv app permissions is Storage, read the contents of the USB storage and modify or delete contents of
the USB storage, nothing about write access.