What's new in v3.15:
*) fixed problem where connecting through RoMON agent with incomplete package set - not all menus were available on the target router;
*) fixed arrow keys in table filter fields;
*) when connected to RoMON agent mark session as RoMNO one;
If you experience version related issues, then please report them to support@mikrotik.com.
Winbox is available here:
http://www.mikrotik.com/download
If you try to upgrade directly from Winbox loader and version is not available, then you might need to wait for a while until cache in path between your device and our servers is refreshed.