If the chip is in, and you have the board points soldered, I would make the chip always on. Just solder the BT to pin 9, point G in the pictures, on the chip.
Then you just have to desolder the D0 wire and the TSOP should flash with Evox. That is assuming that you don't have a Winbond TSOP since those can't be flashed with Evox.
Anyway, never done a TSOP myself but this is how I would go about doing it.
Good Luck,
Megahurt
I'd still say Martinchris23's way would be easier, except instead of using a gamesave exploit, I'd use a dashboard one (That way you wouldn't need the game itself to boot the exploit).