Version 1 series of Znote AAC aims to be multi-distro legacy compatible, and has support for these versions:
TFS 0.2.13+ (Since initial release)
TFS 0.3.6+ (Since Znote AAC 1.2)
TFS 1.2+ (Since Znote AAC 1.5)
TFS 1.3 (Since Znote AAC 1.6).
Many distributions based on these are also working, but some bugs may occur. We have old distributions running protocol 7.4 running Znote AAC, as well as newer distributions for protocol 12.
For TFS 1.4+, especially TFS 1.5 with protocol 12 support, please refer to version 2.0. https://github.com/Znote/ZnoteAAC/tree/v2.