noob here, recently got an Opal and was trying it out by connecting to my home wifi. I did an update, got a lot of flashing blue but the light never went steady white even after waiting an hour. I can connect to its wifi but the admin panel page is blank. I tried holding the reset button down for 10 seconds, same thing: flashing blue light, blank admin panel. I've tried the debrick procedure several times now. I get a successful upload of the img file to the opal, same result: flashing blue light and blank admin panel. I've tried using openwrt-sft1200-4.3.24-0115-1736948303.img and openwrt-sft1200-4.3.21-1016-1729054354.img several times. What can I try next?
In fact if it is a blue LED, the debrick is succeed, the firmware starts normally, and the WAN has no Internet source.
Maybe your browser has opened the management UI of other routers (same as management IP 192.168.8.1).
You can try to clean your browser cache, or access it in privacy mode, or open it with another browser.
Thanks. This is both an aha! and a doh! moment.