ORIGINAL Xbox mod-chip help?

OK so the other day i tried to FTP my Xbox. i thought my Xbox was soft-modded but there was a mod-chip inside i thought when i saw the screws on the bottom. The FTP didn't work so i stopped. i burnt a game (because its a modded Xbox) so i can play the game. i turned on my Xbox and it rrod red ringed of death on me. How do i fix it. I know its not a overheating problem because I let it cool down for 1 day.