Ensure your computer is fully up to date with Windows Updates and with any updates for your specific model computer. Check the vendor website for your computer.
Ensure you have installed the current version of Universal Control.
If you have everything up to date and your Studio 192 still says invalid firmware, you may have a faulty 192. You should contact your retail outlet and or the Distributor in your region for further assistance.
http://www.presonus.com/buy/international-distributors