I have an ASUS RT66U 802.11ac router (wireless-AC1750). My laptop, iPads and other network devices all work just fine. My spark core will only flash blue. I’ve held down the mode button to clear memory and even did the factor reset (hold mode while holding reset). I have the spark core app on my IOS 7 iPad. I try all network SSIDs I have (2.4 & 5) and it always comes back with TRY AGAIN. My router is an OPEN SYSTEM there for there is no password to type in.
I’m using windows 8 and putty will not find the device on COM1. 8N1 9600 baud.
Any clues as to what I should try next?