XT1550 4G modem change?

After owning a dual-sim Moto G2, I knew I wanted a G3 with dual sims and 2GB RAM (16GB ROM). Unfortunately this isn't available in the UK so I bought one from eBay which came from a seller in India.

I don't NEED 4G as I have a mobile hotspot which works very well, but I don't take this everywhere with me. Is it possible to flash the modem or something to get 4G in the UK using this model?

Thanks,
Marc