Download Android Pie 9 firmware for X96 Max TV Box from here or here. Download previous firmware from here. Download Android Oreo 8.1 firmware TV Box 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: X96Max_v311RP_20190722
Archive file size: 936 MB
Model: X96 Max 4GB/64GB and 4GB/32GB TV Box
Platform: AMLogic S905x2
System: Android version 9.0
Build number: franklin-userdebug 9 PPR1.180610.011 20190722 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.