This firmware is for MXQ Pro TV Box with AMLogic S905X CPU.
Download Android Marshmallow 6.0 firmware for MXQ Pro TV Box from here or here.
Firmware details
Archive name: AKMXQ PRO S905X
Image: p212-ota-20170116.zip
Archive file size: 654 MB
Model: MXQ Pro TV Box
Platform: AMLogic S905X
Build number: Amlogic/p212/p212:6.0.1/MHC19J/20170116:userdebug/test-keys
Inside archive: firmware + factory_update_param.aml + recovery.img
Caution: Please update your tv box with much experience, if your tv box faces the problem like bricking, you can have a try with much experience. The firmware update process is done entirely at your own risk. Before updating, don’t forget to back up your data first.