I requested a beta fw and did not receive anything during the last 4 Months...Seems that the cause of this problem is clear now. ...
Ditto!! I've been stuck in the mud for months now.CSS106-1G-4P-1S with 2.7 firmware out of the box.
Then proceeded to upgrade firmware via the web gui manually [swos-css106-2.9.bin]
Switch is no longer accessible via 192.168.88.1. Does not respond to arp.. It appears in Mikrotik neighbour discovery with firmware 2.7, its uptime started counting from 0 after the upgrade.
Will a power reset bring it back to life? Will need to visit a remote location.