There can I get scph7502?

First, check this thread..

http://216.40.247.157/forums/showthread.php?threadid=5377

Second, don't ask for bios files here.. It may get you banned..

Third, use a search engine like www.google.com and do a search for the bios..

Listen to fivefeet8 and go to www.google.com, do a search for PSX Bios and you WILL find plenty of sites that have them. He is also correct when he states that asking about this type of stuff can get you banned. A few of the mods wouldn't hesitate to ban someone for asking about this. Fortunately, for you, I'll give you a second chance. But this thread is now closed. Do not open another one concerning this topic.
sincerely,
sx/amiga