looks like it's CHIPSET='Broadcom 4330'
SD\VID_02D0&PID_4330 == Ampak AP6330
Something is broken in your device, because you are the first MXIII user who indicate the freeze problem.
Didn't you accidentally crossflash with a wrong Android firmware earlier which is not fully compatible with your device?
The M8S+ wireless stack was modified in v9.2.7. It means the dhd module loads statically instead of the wifi_dummy service.
So, your module load failure with M8S+ image may be occoured by the dhd module.
The only reason is your current bootloader (uboot) cannot handle your integrated AP6330 correctly, because probably it is not the original one.