[Q] What baseband I can put s4 if my network is not stable

I am new to the forum, but i wanted to see if you can help me, because I have a problem with my network in many parts of the city, I am without warning, there is very little stable, I am L720VPUGOD2 baseband, and Mexico is my Telcel supply.
I have one more question I can flashing baseband i337m in L720? s4?

Thank you very much for your attention, and support.

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