an s&k 238 alarm reset to default codes ?

hi there i have been looking online for help but all i can seem to find is people bashing this i picked it up for 10.00$ cad
at the local restore as a project i would really like to get this working but this came with no default user master or installer i have the install manual with default installer code does not work the alarm appears to be in a dissalarmed stare any help would be great keep in mind i know it had flaws but would work for what i need it to thanks