Samsung Blackjack SGH-I607 Smartphone "old wont ring" Questions

Wont even open... Just started to give me error msg "file is corrupt or unavailable"... any ideas i have a blackjack 2 that is only a couple weeks old, and when i try to go into the settings to change

...OLD BLACKJACK 1 SUPPORTED IT BUT BLKJCK 2 WONT UNLESS FILE SIZE IS 300KB OR LESS Perform a google search and you will find and dowload free cab files for smart phones to increase the ringtone size to ...

...wont ring or make any noises. I have tried reseting the phone powering off the phone and cleared all memory?? I had this happen after around 14 months of usage. Mind you, I changed the registry value ...

...old who had it and he threw it all over te place. NEVER a problem with it and working like new. Well if you know that LG are working with PHILIPS then you know why they are so reliable. QUALITY above ...