>>385368864
You don't need a facebook account, although if you use the exploit then enabling dev mode can be more fiddly, since the option to select the headset can disappear sometimes (because it's not properly connected) and I've had it revert dev mode a few times so I had to turn it back on. No data was lost, but I wasn't able to play the pirated games I had installed until I did it. It's a simple thing, but worth keeping in mind.