Enabling band 3/1800 MHz LTE on Xperia Z 6606 topic

dear Experts,

Just bought a Xperia Z. Unfortunately, in my country, the telcos use LTE on band 3 at 1800MHz. However, there aren't any good options available in the market. I had a nexus on which i hacked the QCN through a procedure which enabled band 3. Is there any possibility or workaround through which band 3/1800MHz can be enabled on my Xperia Z C6606 (T-mobile variant).

Thanks