The official v0.3.2 b219, b220 and b221 firmwares of Omega2(+) also have that "invisible" blue wifi LED.
The above workarounds may help. Although the combined amber system/wifi LED won't be blue it'll show some WiFi related activity.
disconnect from a WiFi network: uci set wireless.sta.disabled='1'; uci commit wireless; wifi
(re)connect to a WiFi network: uci set wireless.sta.disabled='0'; uci commit wireless; wifi
I may be the only one who wants this, but if anyone else would like to use/modify this script, feel free. I added the ability to 'cancel' the SafePower mode by just running the script again.
Its possible this turns out to be a bad idea, but it cannot be worse than just pulling the power. I have not tried it, but I imagine running in SafePower mode would also not present much problems as ultimately there just is not a lot of flash writing going on (at least in my case).
Glad to see everyone is as excited about the Omega2 Pro as we are! :D
A few clarifying points:
The Omega2 Pro is an addition to the Onion family. We will not be discontinuing Omega2 and Omega2+ for the foreseeable future.
The firmware is an Onion-flavored OpenWRT 18.06. We will still continue to create firmware for the Omega2 family, and the OpenWRT 18.06 version will make its way to the Omega2 and Omega2+ in the short term.
one minor issue might be wifi is turned off at initial install. and then it seems only out of the box configured for IPv6 and not IPv4 which may or may not be an issue for the systems one is using to setup the omega2. additionally, in order to use sd card and/or usb thumb drive there needs to be packages installed before openwrt will recognize them. which without getting IPv4 wifi setup first there is no way get them onboard the omega2. another thing that sucks is most all the openwrt setup guides use ethernet connection for initial setup @ 192.168.1.1, good luck achieving that with the omega2 without a few packages and some trying configuration. yeah, generic 18.06 boots and runs but expect a challenge or two, especially if you have never done an openwrt install before. then again, running through a openwrt install makes you realize what a nice job folks at onion did in the setup processes for the omega2