Verified answer

Either is correct.

Ganbatte is just the transliteration of the symbols がんばって

but the japanese 'n' ん is a bit tricky in its pronunciation. It changes depending on the sound after it.

In Japanese an 'n' following a 'b' sounds closer to a 'mb'.

So 'gambatte' is a little more faithful to what the word really sounds like.

Gambatte

It's Ganbatte.

In English, we tend to write ん as either n or m for pronunciation. It can be either you want in English, but it's better in Japanese.

first one

"ganbatte" is the literal romaji translation.

"gambatte" is the most likely pronunciation because it's easier to go from an "m" sound to a "b" sound, than from an "n" sound to a "b".