Re: 1) - according to this, the revised models have "/R2" at end of serial number:
Re: 2) - see here:
https://wiki.mikrotik.com/wiki/S%2BRJ10 ... l_guidance
Now that's super cool to know, thanks! Hope the dealer over here will get them soon...and yes, the CRS312 is in stock now with most retailers on my home market as the local Mikrotik distributor is very active.
Did you only upgrade ROS or remember to also upgrade firmware (/system routerboard upgrade)?edit: power cycle of the router after the upgrade finally resolved the issue. Fortunately this device is local to me...