TerraMaster Forum

Is it possible to downgrade TOS6 to TOS5 without any data loss on my Raid 5 volume?
I honestly don't see any significant non-cosmetic changes from TOS5 and 6, and I felt more comfortable and reliable with TOS5.
Would it be enough to install just the 5.1.145 package to get back to TOS5 from TOS6, or do I need to do some extra steps first?
Thanks in advance

We do not recommend downgrading the version, as there are differences in the implementation of certain features between TOS 6 and TOS 5. Some content you create in TOS 6 may encounter inconsistencies after downgrading.
If you have any suggestions to enhance your experience, please feel free to share them with us.
If you do need to use TOS 5, please be aware that you will need to recreate a USB Initboot for TOS 5 and reinstall the system.