[Q] Thl W8 Basebands

Hello all!

I bought a THL W8 in Argentina, and I noticied that it works ok in GSM (QUAD BAND) but in WCDMA it only works in 850/2100.
I just ask if there is any baseband flasheable zip to enable 850/1900 instead of 850/2100 knowing that maybe its included in the hardware but capped by software baseband.

Thanks!!!