Terramaster new TOS 7 NAS Software Beta Ready to Test
December 15, 2025 | TerraMaster, a professional storage brand dedicated to delivering innovative solutions for home users, businesses, and developers, today officially launches the public beta of TOS 7. This highly anticipated release, developed over nearly two years by a team of more than 100 engineers, not only celebrates the 15th anniversary of the TOS operating system but also marks its stunning transformation from a simple storage tool into a full-featured private cloud platform. Looking back to 2011, TOS 1.0 debuted alongside TerraMaster’s very first NAS product. Back then, the interface was bare-bones—you could create shared folders, enable SMB, and add a handful of user accounts. It was simple, almost primitive, but it laid a rock-solid foundation.
Fifteen years later, TOS has evolved into its 7th generation. A single TerraMaster NAS can now effortlessly serve as a file server, virtual machine host, developer workstation, online collaboration platform, or even an enterprise-grade permissions fortress. Throughout this journey, we’ve kept asking ourselves one core question: How should a device that people interact with dozens of times a day actually be designed to truly fit the way you work?
With TOS 7, the answer is finally here—and it’s within reach. Built on a brand-new kernel (upgraded to Linux 6.12) and a completely refreshed design language, TOS 7 features 90% newly drawn icons and over 1,000 refined interaction details, making every operation more intuitive, smoother, and faster than ever before.
Transform into an All-Powerful Host and Unleash Unlimited Possibilities
TOS 7 marks the first time we’ve opened full root access while seamlessly integrating official Ubuntu repositories. Developers can now instantly install Nginx, Node.js, Python environments, databases, or compilers using apt—turning your NAS into a fully SSH-accessible Linux server with zero jailbreaking and zero third-party plugins. It’s all native.
The built-in Virtual Machines (VMs) module lets you deploy Windows, Linux, macOS (on supported hardware), or any distro with a single click. Whether you’re building test environments, migrating legacy systems, isolating applications, or creating a compact private cloud, TOS 7 squeezes every last drop of performance from your hardware and turns your NAS into a true flexible computing hub.
Collaboration with Zero Barriers – Your Data Stays Local Forever
Say goodbye to the old “download-edit-upload” hassle. TOS 7 natively integrates online Office tools that support real-time viewing and multi-user collaborative editing of Word, Excel, and PowerPoint files. Documents are saved directly on your NAS—no third-party cloud, no extra subscription fees. Changes sync in seconds, boosting team productivity by 100%. Your data, always under your control.
Search as Smooth as Thought – Instant Response for Millions of Files
Our in-house global search engine combines inverted indexing, kernel-level real-time file monitoring, and asynchronous I/O caching to deliver second-level full-disk scans for millions of files — 10× faster than TOS 6, with 120% higher search accuracy. No need for exact filenames; just type a keyword and get precise hits instantly. File management efficiency jumps by 60%.
Granular Permissions Down to the Thread – Rock-Solid Security
The permission system has been expanded from 3 basic types to 13 combinable domain-based ACL policies, with fully customizable rules (e.g., “department can only read/write specific folders and is prohibited from deleting”). Setup time is 99.6% shorter than TOS 6 — complex authorizations are done in seconds — striking the perfect balance between ironclad data security and flexible access control.
How to Access the Terramaster TOS 7 Beta?
After over 300 days of meticulous development and the collaborative efforts of hundreds of engineers, we have developed the all-new TOS 7 for you—more user-friendly and visually refined. With over 50 new features and more than 1,000 detailed optimizations, TOS 7 delivers a faster response, smoother interactions, and a more elegant interface. Designed with forward-looking interaction concepts, it achieves a comprehensive transformation from the inside out, ushering you into a refreshing new era of operation.
Download the TOS 7 Software Here (Read the notesr below first)
Compatible Models:
• F2-424, F4-424, F6-424, F4-424 Pro, F4-424 Max, F6-424 Max
• T9-450, T12-450, U8-450
• T9-500 Pro, T12-500 Pro, U8-500 Plus, U12-500 Plus
• F2-425, F4-425, F2-425 Plus, F4-425 Plus
• F4 SSD
Conditional Compatible Models(Read the following Special Notes):
• F2-221,F2-422, F4-221, F4-421, F4-422, F5-221, F5-421, and F5-422
• F8 SSD and F8 SSD Plus
• F2-223, F2-423, F4-223, F4-423, T6-423, T9-423, T12-423, U4-423, U8-423, and U12-423
Special Notes:
• For users of F2-221,F2-422, F4-221, F4-421, F4-422, F5-221, F5-421, and F5-422: Please first verify that your BIOS version falls within the range of MAPL0304V16 to V22 or MAPL0303V16 to V22. Otherwise, you will not be able to update to TOS 7.
How to check: Go to TOS Control Panel > System > Update to view your BIOS version.
• For F8 SSD and F8 SSD Plus users: Before updating, you must first update the system to version 6.0.794 (the firmware will be updated during the system update). If you directly installed TOS 6.0.794 via an installation package, please manually update TOS 6.0.794 once again, and then update to TOS 7.
• For users of F2-223, F2-423, F4-223, F4-423, T6-423, T9-423, T12-423, U4-423, U8-423, and U12-423: If your TOS system is currently installed or planned to be installed on an M.2 NVMe SSD, please adjust the BIOS boot order according to the guide before proceeding with the update.
Warning:
1. This update is only applicable to version 6.0.794 or higher.
2. TOS 7 adopts a completely new permission management method. After the update, permission conversion is required. It is recommended to choose automatic conversion. This process is time-consuming, please wait patiently (for example, approximately 400,000 folders may take about 3 hours).
3. After the update, besides the storage pools and volumes in normal use, the Storage Manager interface may display several corrupted storage pools and volumes caused by abnormal operations (such as directly pulling out disks) in TOS 6. If you confirm they are no longer in use, you can delete them directly.
Important Notes:
1. The Beta version is an early testing release and may contain defects. It is not suitable for production environments or storing critical data. Do not use it for official business operations.
2. The update is designed to preserve data on hard drives. However, as a precaution, it is essential to back up all important data before proceeding.
3. If your shared folders were generated by Snapshot, their permissions will need to be reconfigured after the update.
4. After updating, all existing share links, desktop notifications, recent access history, application logs, system logs, and scheduled SMART test plans will be cleared.
5. Following the update, the Resource Dashboard, navigation bar icons, and Debug mode will revert to their default states.
6. The newly added cloud drive mounting features for Alibaba Cloud Drive and S3 protocol in File Manage are not yet complete and are temporarily unavailable.
7. Due to security protocol changes, some applications will require updates or reconfiguration after the update. Community applications may need to be re-downloaded and reinstalled.
8. If you have previously modified the BIOS boot order, please adjust it before updating to ensure the TOS system drive has priority over other boot devices (such as USB drives). Failure to do so may cause the system to boot into the installation interface after the update.
9. System configurations from TOS 6 cannot be directly restored to TOS 7. A new configuration backup will need to be created after the update.
10. Before updating, please ensure your main volume (typically volume1) has at least 3 GB of free space. Insufficient space may cause the update to fail.
11. After updating, the device’s IP address may change. Please use the TNAS PC client to search for and reconnect to your device.
How to Update to TOS 7?
Manual Update:
1. Download the update package: TOS 7 (md5: 3287e60464d2e1dd0fceb04b570fe1cf)
2. Go to TOS > Control Panel > General Settings > System.
3. Under “Manual Update”, upload the update package.
4. Click “Apply”.
5. Once the system update is complete, you will need to refresh your browser.
6. After the update, your TNAS IP address may change. If you cannot connect to your TNAS using the previous IP address, please use the TNAS PC client to search for the new IP address.
Client Downloads:
1. Download TNAS PC 5.2.506 for Windows OS.
2. Download TNAS PC 5.2.506 for macOS (x86 and ARM architectures).
3. Download TNAS PC 5.2.506 for macOS (ARM architecture).
4. Download TNAS PC for Linux.
5. Download TNAS Mobile 3.X for Android.
6. For iOS, experience TNAS Mobile 3.X via: https://testflight.apple.com/join/wFWYABJS.
Bug Report
We sincerely thank you for taking the time to help us with testing! Every bug discovered is an important step toward the official release.
As the Beta version is an early-stage build of the program and may contain defects, please refrain from sharing Beta-related bugs publicly to avoid unnecessary confusion for others.
If you need to report a bug, please send a description of the issue, steps to reproduce it, and screenshots to the designated email address: pm@terra-master.com.
https://www.youtube.com/watch?v=n0aabftiG7Q
