[A3 - SM-A300H/DS] Is it posible to activate 4G/LTE ?

Hi there,
Since Samsung A3 has 3G variant which I owned now, is it posible to activate 4G network on the phone ???
Is it posible to flash modem/firmware file from other variant (A300M, A300FU, etc) to A300H ?
thanks in advance.

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