TV/0030 is the third choice with the same basic signals as TV/0056 and TV/0178. Maybe it has more signals correct.

But with any of those three setup codes you can use EFC KeyMoves to program all the functions that aren't correct in the base setup code. So you need instructions for programming EFC keymoves. Those are in many threads in this forum. And you need the EFC numbers for your missing functions. I'll check a few JP1 files to see how consistent Vizio EFC numbers are across models.

I compared TV/0030, TV/0056 and TV/0178 to The Vizio VX32L. TV/0178 is closest:
The digits, vol+, Vol-, ch+, ch-, prev, and power all match across the board (all three setup codes and the Vizio). But TV/0178 also matches for Mute, Menu, Select, Sleep, PIP and Info.

TV/0056s only extra match is MUTE and TV/0030's only extra match is INFO.