Trying to upload a custom firmware build to an AR-750s and for some reason just cannot convince U-boot to talk to me! Hooked up the UART (maybe in the future those pins could come populated instead of just open guys… since the heatsink practically blocks the bottom of them and makes soldering especially fun), and I can see that UBoot properly goes into HTTP recovery mode if I hold the reset button for 5+ LED flashes.
An yet, no connectivity. I have tried two different laptops, each of the three ports on the AR-750s, and even to be safe hooked up a small 8 port switch in between. In all cases I cannot reach 192.168.1.1 with my laptop configured on 192.168.1.2. On the U-boot console all I get is “Trying eth0”, then about 20 -30 seconds later “ARP Retry count exceeded, trying again”
Any thoughts on what I’m missing? I’ve done this with many MiFis in the past and had no issues, but the 750s is just being a pain…