He gets thrown into the Sarlacc, but he doesn\'t die. See the monster keeps its victims alive for hundreds of years, slowly digesting them. Boba just blasted his way out of it. But the monster\'s toxic digestive gases (or something) screwed him up big time and gave him amnesia. When he escaped he didn\'t know who he was, then a fellow bounty hunter (I think) found him and took care of him until his memory came back.
Boba doesn\'t die in any of the Star Wars movies. Dunno if he does later on, either.