Are there any upgrade instructions available? All of the instructions I find are for a zip file, not an executable bin file. Also, is PostgreSQL a requirement now?
The upgrade process is identical to the initial install process.
If you used the .BIN file initially, continue to use it. If you try to install to a directory that already contains TimeTrex, it will perform an upgrade instead.
If you used the .ZIP file initially, continue to use that.