I don't think a 200% Scan Rate cheat is really necessary, because the "Enhance All Attributes (Blue Values)" cheat made by
@TomSwitch is even better.
The original cheat sets all blue values to 1000:
[ (Hold ZR) Enhance All Attributes (Blue Values) = 1000]
04000000 002515D8 B94076D9
80000200
04000000 002515D8 B94076D9
04000000 002515D8 14C745E4
04000000 03422D68 18000159
04000000 03422D6C B900B6D9
04000000 03422D70 B900BAD9
04000000 03422D74 B900BED9
04000000 03422D78 B900C2D9
04000000 03422D7C B900C6D9
04000000 03422D80 B900CAD9
04000000 03422D84 B900CED9
04000000 03422D88 B94076D9
04000000 03422D8C 1738BA14
04000000 03422D90 000003E8
If you want the blue values to be 9999 instead, you only need to change the last value from 000003E8 (1000) to 0000270F (9999):
[ (Hold ZR) Enhance All Attributes (Blue Values) = 9999]
04000000 002515D8 B94076D9
80000200
04000000 002515D8 B94076D9
04000000 002515D8 14C745E4
04000000 03422D68 18000159
04000000 03422D6C B900B6D9
04000000 03422D70 B900BAD9
04000000 03422D74 B900BED9
04000000 03422D78 B900C2D9
04000000 03422D7C B900C6D9
04000000 03422D80 B900CAD9
04000000 03422D84 B900CED9
04000000 03422D88 B94076D9
04000000 03422D8C 1738BA14
04000000 03422D90 0000270F
That's the only change needed.