The 2nd line on all ports is incorrect, here are the correct versions. I also modified the second instruction for slightly easier conversions
NTSC-U
04539E7C 3C60XXXX
04539E90 6064YYYY
PAL
0453F3B8 3C60XXXX
0453F3BC 6064YYYY
NTSC-J
0453ED38 3C60XXXX
0453ED3C 6064YYYY
NTSC-K
0452D410 3C60XXXX
0452D414 6064YYYY
XXXX = Upper half of word used for time limit
YYYY = Lower half of word used for time limit
To get the word value, convert your max time in milliseconds (ms) from decimal to hexadecimal. Default is 300000 ms (5 minutes)
NTSC-U
04539E7C 3C60XXXX
04539E90 6064YYYY
PAL
0453F3B8 3C60XXXX
0453F3BC 6064YYYY
NTSC-J
0453ED38 3C60XXXX
0453ED3C 6064YYYY
NTSC-K
0452D410 3C60XXXX
0452D414 6064YYYY
XXXX = Upper half of word used for time limit
YYYY = Lower half of word used for time limit
To get the word value, convert your max time in milliseconds (ms) from decimal to hexadecimal. Default is 300000 ms (5 minutes)