Download Lollipop 7.1.2 stock firmware for H96 Max TV Box from here, here or here. Download previous firmware from here. Download Marshmallow 6.0.1 stock firmware for H96 Max TV Box from here. Download Rockchip Driver Assistant v4.4 from here and download Rockchip Batch Tool v1.8 from here.
Archive: H96 MAX Android7.1RK3399 171211
Model: H96 Max 4GB RAM + 32GB ROM TV Box
Image file size: 685 MB
Platform: Rockchip RK3399 / RK330C
Image name: rk3399_7.1_new_H96max_1.5M648M_ear_171211.img
SDK version: RK30_ANDROID6.0.1-SDK-v1.00.00
FW version: 7.1.01
Boot version: 1.09
Inside archive: firmware + DriverAssitant_v4.5 + FactoryTool-v1.45e + H96 MAX upgrade All steps
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.