PLC Firmware Revision Compatibility Issue

Hello everyone,

I'm facing an issue while trying to go online with a PLC. The firmware revision of the controller is 34.011, but the offline project I have is showing a firmware revision of 33.xx. Due to this mismatch, I'm unable to establish a connection.

I'm relatively new to this company and recently learned that the program on my computer may have been modified by a contractor company, which might explain the version difference. I suspect they may have used a higher version of RsLogix when making the changes.

I'm looking for guidance on how to proceed in this situation. Is there a way to update the offline project's firmware revision to match the controller's firmware revision? Or is there another solution to resolve this compatibility issue?

Any help or insights would be greatly appreciated. Thank you!