I can't help but after upgrade I had no internet and it seems like HD was loading something after successful update reboot for a long time and after about 5+ minutes I was able to connect to pfSense and got internet at the same time.
Also, huge php error log https://pastebin.com/q2QnnuVG
it is a class 10 SDHC, 4GB. The slow speed shouldn't matter in normal operation, I assume.
But I'll get something faster occasionally. That 40min without any internet connection was painful.