Since the new version of TOS 5.1 system requires more storage space, if your initial system was TOS 4.x and the system partition is 2GB, please do not update to this version.
To check your system partition size,
Go to "TOS > Control panel > System Info > Overview", and check the space from the item of "/" .
If your TNAS does not meet the conditions but your want to use TOS 5.1.41, you can refer to the following guideline: viewtopic.php?f=28&t=4912
Release Notes
Applicable models: F2-220, F2-420, F4-220, F4-420, F5-420, F2-221, F2-421, F2-422, F4-221, F4-421, F4-422, F4-223，F5-221, F5-225, F5-421, F5-422, F8-421, F8-422, F2-223, F4-223, F2-423, F4-423, T6-423, T9-423, T12-423，T9-450;
This update includes the following bug fixes and optimization for the previous version:
Bugs fixed
1. Fixed some issues with TNAS PC login.
2. Fixed some issues of permission management in File Manager.
3. Fixed the issue that USB Copy could not obtain USB online status.
4. Fixed the issue that files cannot be deleted in File Manager after cleaning the recycle bin via SMB.
5. Optimized the operation of the boot partition when creating a disk array.
Important Notes
- This update is only for TOS 5.1.24 or later versions. If your TOS version does not meet the requirements, please update to TOS 5 by reinstalling TOS.
- There is an error in the encryption mechanism of encrypted folders created on TOS 5.1.37, which prevents them from being decrypted in later versions. Therefore, if you are using TOS 5.1.37, before updating TOS, please back up the data in the encrypted shared folder, and then delete the encrypted folder. (Only need to deal with the encrypted shared folder created in TOS 5.1.37, other encrypted Shared folders are not affected by this)
- The kernel of TOS 5.1 has been updated to 5.15. Since the Linux kernel has removed the Intel Celeron J1800/J1900 GPU drivers from 5.15, the models of this platform no longer support GPU hardware video acceleration. If you are a user of this series of models and need to use GPU hardware video acceleration, do not update TOS 5.1! Models involved: F2-220/F2-420/F4-220/F4-420/F5-420
- Under normal circumstances, the system update will not affect the data in your hard drives, but for your data safety, it is strongly recommended that you back up your data before the update!
Manual update:
1. Download the update package: TOS 5.1.41 (md5:4b73bc3a35d7c5a52730c39c9311d12f)
2. Go to TOS > Control Panel > General Settings > system;
3. Under the "Manual update", upload the update package;
4. Click "Apply";
5. After the system update is complete, you need to refresh your web browser;
6. Your TNAS's IP address may change after the system update, if you are not able to connect to your TNAS with the previous IP, you need to search the new IP again with the TNAC PC client;
TNAS PC:
After updating to TOS 5.1.41, you need to update your current TNAS PC to 5.0.33 or a later version, or you may not able to search your TNAS device.
1. TNAS PC 5.0.35 for Windows OS
2. TNAS PC 5.0.41 for macOS
It is recommended that you uninstall the previous version before installing this version of TNAS PC.
Issue report
If you encounter issues during use, please report to the corresponding TerraMaster official forum, or email your issue description and screenshots to pm(at)terra-master.com
