About This File
Usually the firmware update archives (RAR or zip files) have instructions inside them on how to update. The Axpert King 71.86 main firmware does not, so I've added this install guide separately.
You may find this Axpert MKS installation instruction post of some help:
http://forums.aeva.asn.au/viewtopic.php?title=pip4048ms-inverter&p=64096&t=4332#p64096