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Small Details for Big Differences
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01/19/2012- The original V5 Thecus Firmware was released on March 3, 2011. Along with fixing  some previous  issues, the new V5.02.02 firmware upgrade has added features, protocol upgrades, and a bit of tweaking. The firmware upgrade will be available for all V5 compatible models.

Quick module access

With modules getting more and more important for Thecus NAS, quick access is a requirement. Now, there is the possibility to add an extra button on the login screen where you can pick the desired module and login with the proper user account. Don't forget to allow pop-ups to take full advantage of the new firmware!

The module section allows users to configure which one appear in the list. Third-party developers can also set their own icon.

Users and groups backup

Returning the NAS to its factory default is an easy operation, but it used to have one big drawback: all local users, groups and permissions (ACL) were deleted. Now, it's possible to save them on a RAID volume and restore them if needed. It's also possible to export them to another NAS.



General upgrades and tweaks

  • NFS, Samba, SSL certificates, SNMP trap, AFP, Time Zone, and FTP: all those features have been upgraded to new versions and have more options.
  • The Web UI has been slightly tweaked to be faster and includes full translation
  • Network UPS function
  • Added “Read-only” function for public folders
  • Upgrade process slightly changed and is more detailed
  • And much more, check the release notes for more details.


The N4100PRO is based on a different architecture, thus the upgrade process is different. It also benefits from a special function: you can now adjust the fan speed.

When upgrading a NAS has to be done, the process can be risky, mostly because of outside potential issues. That's why we recommend to back up your RAID before an upgrade. 

Please keep in mind that downgrades are not possible after installing a new firmware.

To get the new Firmware:

To get the release notes:

V5.02.01: here

V5.02.02: here

About Thecus®
Established in 2004, Thecus Technology Corp provides market leading network attached storage and network video recorder solutions, committed to revolutionize how everyone from home user to enterprise level business centrally stores, manages and accesses their digital data both onsite and cloud-based. Thecus strives to deliver continuous innovation through cutting edge technology and design to provide data storage with the most customer-friendly platform, rapid performance and robust security. In May 2016, Thecus was formally acquired by Ennoconn Corporation and thus became part of the Foxconn IPC Technology group. Partnered together this diverse group of companies work in tandem to provide a total IoT (Internet of Things) solution. Now with an unparalleled portfolio to work with, Thecus is collaborating to bring unprecedented change to the network storage industry.