Rslogix 5000 Firmware 20.12 — Hot

You saved a project using v20.01 and now you have v20.12, but the software complains. Solution: Open the project in RSLogix 5000 v20.12. Go to Logic > Controller Properties > General . Change the "Revision" from 20.1 to 20.12. If the project is read-only, export the logic as a .L5K file, edit the revision number in Notepad, and re-import.

If you open an older v20.01–20.11 project, RSLogix will prompt to convert to 20.12 (recommended). No logic changes needed. rslogix 5000 firmware 20.12

If you plan to upgrade controllers later: You saved a project using v20