International ROM installation for Unlocked and S-OFF-ed Sprint M9

Hello, guys.

I have Sprint HTC One M9.

I have it S-OFF-ed and my phone's bootloader is unlocked too.

I live outside of US and I would love to install an international ROM.

Can someone tell me what to do? Or could you direct me to any step-by-step tutorial maybe?

Thanks a lot in advance.

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