It will be my first time if i'll do it. I've watched lots of video tutorials and I'm pretty sure on what to do and the only thing I'm not sure about is its safety. I just want to be certain if my device will be okay.
...settings? Will it be as if it was not jailbroken at all? I just wanna be sure that I can restore everything should the jailbreaking doesn't work or it causes my device to be frozen.