4:44 PM PT -- Jess has provided an encouraging update on his brother's whereabouts, saying they've located Bam ... and that he's unharmed. This follows what he says was a scary text sent to him and other Margera family members that he claims sounded suicidal in nature.
10:26 AM PT -- Bam Margera's attorney, Peter Thompson, tells TMZ that Bam came to L.A. -- before going off the radar -- in an attempt to reunite with his son, whom we're told he hasn't seen in 2 months .