Problem flashing Engenius ENS620EXT

Installing and Using OpenWrt
1

I'm running into a problem flashing two Engenius ENS620EXTs. Both started out with factory firmware, version 3.0.1.1, and I tried to flash openwrt-19.07.0-ipq40xx-generic-engenius_ens620ext-squashfs-factory_30.bin. The flash procedure starts off fine, then about a minute into the procedure the ENS620EXTs reboot. A few seconds later, the Power Led comes on, and a few seconds after that the LAN1 Led flickers for a bit. After maybe a minute, the LAN1 Led goes out and that's all she wrote. At this point, the router does not have an IP address (at least, not one that I can find). Interesting observation: the Engenius factory updates are all between 15-20MB and the OpenWRT image file is only 8MB. Also, I set up the Solar Winds TFTP server with the OpenWRT image file, but the router never tried to connect.

Any suggestions? Thanks!

2

Does the same happen when you try it with the 19.07.3 factory.bin image?

3

I don't know. At this point, even if I power cycle the routers, I only get the power Led - no way to log in to try anything else.

4

Looks like no quick remedies. I can open them up and solder on a serial cable. Is there a document somewhere that describes the commands I need to enter to reflash? Thanks!

5

Did you ever resolve?
Did you ever attempt to press the RESET button when the Power LED flashes to get into recovery mode?