Download Android Pie 9.0 stock firmware for X96S Wireless Display Dongle from here or here. Download previous firmware from here. Download Android Oreo 8.1 firmware for X96S Wireless Display Dongle from here. Download Amlogic USB Burning Tool v2.1.6 from here or download Amlogic Burn_Card_Maker v2.0.2 from here.
Archive name: X96S_V311_P (432) 20200620
Image: X96S_V311_P (432) 20200620.zip
Archive file size: 736 MB
Model: X96S 4GB RAM 32GB ROM Wireless Display Dongle
Platform: AMLogic S905Y2
System: Android version 9.0
Build number: Amlogic/faraday/faraday:9/PPR1.180610.011/20200620:userdebug/test-keys
Caution Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.