Is there any hope?
 

Is there any way I can bypass the anti-mod message that comes up when I put in a game (ddr 5, to be specific) other than using a internally soddered stealth chip? (I can't find any action replay codes to deactivate it either...)

try these:

D00E82EC 023A
800E82EE 1000

or

D00E8264 000A
800E8266 1000