In the now non-canon Star Wars Legends (formerly Star Wars: The Expanded Universe), the story A Barve Like That: The Tale of Boba Fett even shows Fett managing to get the Sarlacc’s consciousness Susejo to contract its muscles around his jet pack, causing it to ignite and allowing him to get free. With Mando using his jet pack to blast out of the krayt dragon, this offers a major hint that this aspect of Legends has seemingly been retrofitted into Boba Fett’s history within the canonized Star Wars movies and shows. The presence of Cobb Vanth himself also offers evidence of Fett using his jet pack to escape in wearing Fett’s old armor.
Though the armor is visibly damaged from being inside of the digestive tract of the Sarlacc, Fett’s old jet pack is still shown to be fully functional, with both Vanth and Mando flying during the final battle with the krayt dragon. With Boba Fett’s jet pack still operational after all these years, it was clearly able to make it out of the Sarlacc with only relatively minor damage. This means that it’s perfectly plausible that he was able to use the jet pack to escape the Sarlacc in a manner similar to Mando’s method of getting free.
Boba Fett was already known to be appearing in season 2 along with Ahsoka Tano, and with his armorless cameo at the end of the episode, there’s good reason to think that he and Mando will cross paths before too much longer. When that happens, Boba Fett himself might shed some light on what will essentially be the canonized explanation of his escape from the Sarlacc. However, the premiere episode of season 2 of The Mandalorian may have offered a major clue as to how he pulled it off.
Originally from https://screenrant.com/mandalorian-season-2-boba-fett-sarlacc-escape-jetpack-hint/