Whats difference between 3.35 and 3.41 ?

I use sprint m9 in GSM area
Then no need sprint ROM. No sprint Rom is bad(activation and bloterwear)
I use 3.35 international rom. But some problem.
3.35 is not support now on tap in other languages except english)
But sprint 3.41 is support other languages.
I know that nexus series support other languages now on tap in 6.0.1
But 3.41 is not 6.0.1
And today. I flash 3.42 rom. But this rom is not support other languages now on tap
What's depends now on tap?

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