Statutory Warning: I haven't tried the process and not responsible for any bricked phones, i searched it for my bro who apparently is too petrified with touching the firmware.
Link to firmware -> samsung star mobile phone
Link to guide -> samsung star mobile phone
besides this the site also includes a lot of wallpapers games etc
some discussion about the firmWARE IN THE LOWER HALF OF THIS PAGE -> Samsung Star-- JAVA Apps problems [Archive] - Digit's Technology Discussion Forum
SOME MORE STUFF
Games:http://www.4shared.com/network/search.jsp?searchmode=2&searchName=touch+games
Other games and softwares :http://www.getjar.com/software/Samsung/S5230
also: http://gallery.mobile9.com/c/java-softwares/1/
