@Anders-Öster I'm also seeing the filesystem destroyed on power off and an infinite blink. My 2+ was one of those that didn't blink on first power-on and gets stuck powered off when it's doing a firmware update. This is still an issue as of b150. poweroff and reboot do nothing even when run directly from the /sbin folder where they live. I haven't tried using an SD card in there yet but that shouldn't really be the problem.

I did have luck changing the LED using this command from elsewhere on these forums: echo default-on > /sys/class/leds/omega2p:amber:system/trigger
I have also been re-installing the console on boot through SSH. First running oupgrade --latest then opkg update and reinstalling web stuff with console-install-tool.
I've also been having issues getting it to connect to any AP other than my android hotspot so I've had 2 SSH sessions open with one running logread -f to keep a screen as a running log. @Peter-Hatina just uploaded a new set of instructions changing from AP mode to STA mode that might solve it so I'll have to check that out next.

@Lazar-Demin would it help if we got you some logs? I don't have a serial port reader, so I've been relying on the internal logging. Is there any hope of getting a build with a more verbose logfile?