How to Upgrade to TOS 5 on Your Terramaster NAS

REALLY IMPORTANT!!!! WATCH THIS VIDEO ALL THE WAY THROUGH BEFORE UPGRADING YOUR TERRAMASTER!!! Upgrading from TOS 4 to TOS 5 is not as streamlined and simple as previous updates and features a few unconventional choices in installation. Additionally, ensure that your storage system has a backup in place! Finally, ensure that you make a backup of the system configuration in the control panel! As you cannot reverse the installation easily and could potentially lose your default configuration, users, connected services and more if you do not back up the config.

Must read before installation!

1. Since the root file system, storage path, application installation location, and startup method of TOS 5.0 are different from those of the previous version, you cannot directly update to TOS 5.0 from the current version, but need to reinstall the system.

Reinstalling the system will theoretically not delete the data on your hard drive, but for safety consideration, please back up your data in advance.

The new TOS 5.0 system is only applicable to the x.86 series of TNAS models (220 series, 221 series, 420 series, 421 series, 422 series, 423 series);
Your current TOS version need to be 4.2.32 or above;

TNAS PC needs to be 5.0.19 or above, otherwise, it may not work properly;

TNAS Mobile needs to be 5.0.1 or above, otherwise, it may not work properly. Note: Currently, TNAS Mobile is only available for iOS, and the Android version will be released soon, please pay attention to our update news.

How to install TOS 5.0?

Download the TOS 5.0 installation package;
Log in to your TOS, go to Control Panel - General Settings - Factory Default, tick “Reset to Factory default” and click “Apply” to clear your system;

Your TNAS will automatically restart and enter the initialization guide page; if you cannot enter the initialization page, please use the TNAS PC to search for your TNAS again, and enter the IP address of your TNAS in the browser address bar;

Select the “Custom” mode during the initialization process, upload the TOS 5.0 installation package, and wait for the installation to complete;

After the system installation is completed, the system will automatically restart; Then, follow the instructions on the page to complete the administrator settings;

After the system is installed, you need to clear the browser cache, otherwise some system pages may not be displayed correctly.

According to Terramaster the new TOS 5 release has been in development for one and half years, includes more than 50 new features, 600 enhancements, comprises 300,000 lines of new code and now, the long-awaited TOS 5.0 is officially released today! Although there are a huge number of improvements under the bonnet, there is also a whole bunch of improvements on the surface too, ranging from improvements in the GUI and responsiveness to new fully featured applications. Here is what you need to know.

Thanks for watching. Do you still need help? Use the NASCompares Free Advice section above. It is my free, unbias community support system that allows you to ask me questions about your ideal setup. It is NOT a sales platform, NOT a way to push hardware you don’t need and, although it is just manned by me and might take a day or two for me to reply, I will help you any way I can. Below are some more popular guides.

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[jmoliveirax]

I never comment on videos, but I just had to thank you for what you are doing for the nas comunity. My knowledge about nas was close to none, but thanks to your videos I was able to setup one by myself and run a plex server.
Special thnaks for the F2-423 reviews, for Terramaster Setup Guide 2022 and this update video!
Keep up the amazing work, the community thanks you!

[marcogodel]

Took me a week (and going crazy) to Update my NAS. Then, I found this Video. THANK YOU SO MUCH !!! Will share it as much as possible. THANK YOU !!!

[hesjane]

Thank you so much - you videos are always so helpful, especially this one. I needed to upgrade to TOS 5 because I was unable to map USB drives attached to my NAS on TOS 4.x. The upgrade solved the issue immediately. Once again... thank you for the time you take to make and upload these instructional videos.

[moisesmiranda]

Just sent for my nas f4 423 to replace my qnap ts 251. Thanks for all the nas reviews! Wanted the spec with the price.

[DannoFZ]

This update was a bear. I have an early version F2-420. They threw a USB port on the board (internally) to store their firmware. Before I started, I pulled the USB drive out of the NAS and made a backup image of it (on Windows using WIN32DiskImager). I'm glad I did because when I went into the system and restored Factory Defaults the USB drive failed. Make sure you have a (minimum) 4GB USB drive to use. I ended up flashing the 4GB drive with my 4.x backup and then booting the system and manually applying the TOS 5.1 installation for "new installations." At one point during the process it states that "all data will be deleted" but this was not the case. After many hours, I wound up with a stable installation of 5.1 and my data survived. After I configured everything to my liking I pulled the USB drive and saved a backup image of it so I can flash a new one if this drive fails. USB drives aren't as robust as onboard, non-volatile memory so it's a good idea to make sure you have a clean backup.

[darknightstudio]

Just followed this and it worked for me. Thank you. Subscibed and liked.

[um]

'Theoretically' fills me with confidence haha

[WhiteWolf]

Thank you! You saved me on this one :)

[KingdomChristian]

Great video! I just wanted to add something I discovered during my TOS 5 upgrade. I have model F5-221 and was entirely unable to reconnect after the TOS 5 upgrade. I tried using the /bootloader/#/ command but got nothing. I could find the NAS with TNAS-PC and with the Advanced IP Scanner tool. But could not get a connection of any kind through a browser. I did a search for issues connecting after TOS 5 upgrade on the F5-221 and found a Terramaster thread where they said you have to use TNAS-PC to find the NAS, select it, and then click LOGIN. After I did that, everything went like clockwork.

[chrisk]

I've been sitting on the TOS 5 for months now as I've been struggling to find an appropriate way to backup my data. I have an external hard drive, but I cannot get the TNAS to back up any data. Any suggestions for data backup before updating?

[ADDICTIVESimon]

Another great 'how to vidoe' Robbie... but how on earth do you map a network drive on this version of TNAS PC as there isn't a 'map network' option available on this new version for TOS5?

[pragmaticivan]

Just did that, even though it says it will erase all data. Everything was kept safe (I did backup everything just in case)

[IntoxicatedVortex]

Yikes! And they wonder why people don't upgrade to the latest software to give them the needed security updates that keeps them ransonware free. The moment its difficult and/or a clear and simple process is the moment people don't upgrade.

[gusarias]

thank you for the info, just one cuestion how can you make the the ip adres static ? on tos 5

[EvenMonkeys]

Just came across this & Subscribed :) I have followed the video and worked great, how about one after upgrade setting up file system snapshot. firewall, http/s port, security isolation mode as they all flagged read after install. also, best setup & apps to install and use. Thanks

[beemer]

I did it but now in version 5, I cannot create any user anymore! Any solution to this nightmare?

[XxizzyspinzxX]

Good guide my friend. I am having one minor issue with the TNAS mobile app. Is the mobile app incompatible with TOS 5?

[Starxteel]

Please compare the Seagate Exos X20 vs WD Gold 20TB

[__aceofspades]

I have had a major issue with this upgrade. On the re-install screen where you choose "Custom", doing so pops up a warning telling me it will DELETE all my data... I cannot get past it and Terramaster support is useless. I made sure to fully read the instructions multiple times and do everything they said, but now im screwed. I couldnt backup my data because it wouldve cost me $500+ for spare drives. I shouldnt have put any faith in Terramaster, and shouldnt have updated.

[evanssaevanssa]

I am looking to buy my first nas is there model that has ver 5 already installed