QNAP TS-420U TurboNAS Firmware 4.3.3.1386 Build 20200821

Fixes:
- VMware VAAI support for the TS-x79, x70U, and x69 series
- VMware vSphere Client Plugin support for the TS-x79, x70U, and x69 series
- Windows Server 2012 Compatibility Certification for the TS-x79, x70U, and x69 series
- Amazon S3 cloud storage now supports objects greater than 2 GB
- AFP upgraded and data transfer performance enhancement on small files
- [x86] Kernel upgrade to 3.4.6 for the TS-x79, x70U, x59, x39, 509, 809, and SS-x39 series
- Updated Gigabit Ethernet drivers for the TS-x79 and x69 series
- PowerWalker USB UPS support (refer to the UPS compatibility list on the website for specific models)
- HDD Health now displays I/O history for the diagnostics
- Wireless LAN IP is displayed on LCD-equipped models
- Auto port-mapping support for multiple NAS setup in the Auto Router Configuration (connected via MyCloudNAS.com)
- Remote Replication UI enhancements
- Improvements to HFS+ compatibility
- UPnP Network Discovery security enhancements
- [ARM] The following kernel patches have been applied to the ARM-based models: CVE-2010-2521, CVE-2010-2248, CVE-2010-1162, CVE-2010-2478
- Fixed upload error in case of destination folder name containing '&' in the Web File Manager
- Fixed non-stop media library scanning if the Music Station is disabled or changed to manual scanning
- For the Music Station, the finish time is added in the media library scanning schedule

Note1

: The firmware can’t be downgraded on the TS-x69 series after upgrading to 3.8.2.

Note2

: OpenSSL and OpenSSH upgrades are currently under internal development and testing. These updates will be included in the next major firmware version.

About General Firmware:

Applying a newer firmware version than the one already installed on your unit can bring various enhancements, include workarounds for diverse problems encountered by the device, and improve or add newly developed features.

On the other hand, downgrading the firmware version can recover the device's functionality in the event of a software update either turning up faulty or causing the unit's overall performance to drop. However, bear in mind that applying an older firmware isn't recommended and might not always be possible.

When it comes to the update steps, due to the large variety of devices and numerous ways for installing a new firmware, it is recommended that you carefully read and understand the upgrade steps, and consider applying a different firmware only when you have familiarized yourself with the update method.

As the installation process is most of the times quite risky, this step should be taken by users that have the ability to successfully complete the update; regular users may initiate it at their own risk. Moreover, it's best that this task be performed in a steady power environment such as the one ensured by a UPS unit.

Therefore, if you consider applying this release, hit the download button, take into account all the aforementioned aspects, and update the device's firmware. Also make sure you constantly check with our website to ensure that you don't miss a single new release.