I5 versions older than v1.15 are no longer supported beginning today, Monday, July 20, 2026. If installed, these older versions of I5 will still run, but they will not be able to submit data files to PTAGIS. If you attempt to submit data from v1.14 or earlier, you will receive an Unauthorized message back from the PTAGIS server.
Beginning with version 1.15, I5 requires users to specify the Time Zone before data can be parsed in a Site Dataset. Earlier versions automatically used the computer’s time zone setting, which was not always correct, and some data contributors missed the need to change it. We have also fixed many bugs and added enhancements since I5 was first released.
See the Release Notes for more information on the changes and bug fixes that have been incorporated into recent I5 versions. You can download the latest version of I5 from the PTAGIS I5 software page.