You can download the free demo version from the official R-TT website. It allows you to scan your drive and see exactly what files are recoverable before you spend a dime.

: Software piracy violates copyright laws and the terms of service of the developers. Using unauthorized keys deprives the creators of the revenue needed to maintain and improve the software.

Your data is usually worth far more than the cost of a software license. Using an unofficial R-Studio 4.2 serial key puts your privacy and your files at extreme risk. Stick to the official demo to verify your files, and then invest in a legitimate license to ensure a successful recovery.