Wait for a while for RPCS3 to install all the important files.Select the firmware which you have downloaded from the PlayStation site.Now, go to RPCS3 select “File > Install Firmware”.Scroll down “ PS3 System Software Update“.There you will see all the firmware for all consoles in PlayStation.There select “ System Software” from the list.At the top-left menu, click on “ Help.“.First, visit the official website of PlayStation.You can download the firmware by following the steps: