Regarding updates, Reaconverter 7 Standard likely receives periodic updates with new features, improvements, and bug fixes. I suggest checking the software vendor's website for information on update releases and installation instructions.
Instead of seeking unverified "free keys" that may contain malware, consider these official options: reaConverter Lite : A completely free version
If you only need to convert standard formats like JPEG, PNG, or TIFF, the Lite version is completely free and includes many of the batch processing features found in the Standard edition.
: Input your purchased activation key into the provided field and ensure you have an active internet connection to verify the license. 2. How to Update for Free