Historically, this was revolutionary. Before the PS3Xploit update era, hacking a PS3 usually required a hardware flasher (soldering chips to the motherboard) or owning a console that was already on extremely old firmware. PS3Xploit changed the game by making the process "softmod"—requiring nothing more than a USB stick and an internet connection.
The by bguerville is widely considered the safest way to patch your console for CFW. Ps3xploit.com Update
To use current PS3Xploit updates, your setup must meet these criteria: Browser Preparation: Historically, this was revolutionary