[Firmware release] - QTS 4.2.0 Build 20160119 official release
[Bug Fixes] - Fixed an issue where the system log shows "The file system is not clean...." when rebooting with various apps launched. - Fixed an issue where the folder path of an external drive would be changed after altering the folder properties of an external drive in Control Panel. - Fixed an issue where changing folder permissions would not take effect if changing the folder permissions from R/W to Read-only via Samba protocol. - Fixed an issue where files downloaded from OneDrive to a shared folder would not show thumbnails in the shared folder if accessed via Samba protocol. [Improvement] - Reduced the possibility of a reboot caused by running out of system memory.