Download Android Oreo 8.1 stock firmware for H96 Max+ 4GB+64GB TV Box from here or here. Download Android Oreo 8.1 stock firmware for H96 Max+ 4GB+32GB TV Box from here. Download Rockchip Driver Assistant v4.4 from here and download Rockchip Batch Tool v1.8 from here.
Archive: H96 MAX+ 4+64GB 20181008
Archive size: 828 MB
Model: H96 Max+ TV Box / H96 Max Plus TV Box 4GB+64GB
Platform: Rockchip RK3328 / RK322H
Image name: RK3328_H96_MAX+_HS2734_8.1.0_20181008.2210.img
FW version: 8.0.00
Boot version: 2.46
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.