Are you after the software utility (ControlFlash) and firmware files used to update the firmware of the PLC, or are you looking for the software (RSLogix5000) used to configure program and troubleshoot the PLC?
If you just need the update, then what revision of firmware are you looking for? The firmware update files also contain the firmware update utility.
Be warned that updating the firmware of the PLC requires a matching version of the PLC programming software. The programming software is not free and no one here will give it to you. But I'm sure we would be more than happy to help you with a firmware update.
OG