Synology has released Update 3 for DSM 5.2-5592 with a few minor fixes and enhancements. As usual, they're minor unless you have a specific need for their change. None of the changes are security releated. Changes include:
- Optimized fan settings for DS715 and DS215+.
- Enhanced compatibility with hard drives.
- Improved the compatibility with UPS devices.
- Fixed an issue where the NTP (Network Time Protocol) service became temporarily unavailable after manual calibration.
The update does reboot the Synology NAS so you'll want to do the update when no one is using the NAS. The update only takes a couple minutes plus the time of the reboot. I didn't have any issues updating DS212+, DS415+, DS1511+ and DS1815+ Synology NASs.