Link to download the new version is here:
https://tbsoftware.s3.ca-central-1.amazonaws.com/3.1.126/TBToolPack-3.1.126.4-Linux-centos7-x86_64-Install
You can check new features from what is new in software Release 3.1.126
Note: there is a new check that is done in the configuration: The management IP must be in a different subnet than the LAN/WAN interfaces.
Make sure this is the case before upgrading.
For other versions, please contact TelcoBridges support: support@telcobridges.com