AP1300 uboot / POE

I am going to try upgrading my AP1300 to the latest v4 beta firmware this coming week. It is powered by POE rather than a mains adaptor. Is the sequence still the same for uboot? Plug in only the WAN to power it on while holding the reset button, then wait for this LED sequence * For GL-AP1300(Cirrus), the power LED flashes slowly 5 times, then stays on for a short while, then flashes quickly all the time.