Jailbreak hack to enable channel 14 on wifi?

okay in apartment wifi saturation crazy. old iphone 4 able connect channel 14 wifi stock, 4s refuses acknowledge router. right i'm using ch 13; while works, channel 14 better since doesn't overlap 1-13 @ all. picture worth 1000 words, here's picture showing how saturated channels here:



anyway, assume iphone following kind of regulatory restrictions , disabling ch 14 (though it's weird 13 works). there can reenable have jailbreak?

 

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