N7105 Not working 3G on Argentina

view story

http://forum.xda-developers.com – Hello i bought my N7105 on China. It works perfectly but my problem is that in Argentina i have only EDGE signal for Internet Not 3g. I wish to know because i read a lot.. Because i think my celphone was europe version or korean version, never will know. I think that the problem is that my UMTS is working on different bands ( 850 and 2100) and in Argentina we use ( 850-1900) so i Would like to know if it`s possible to install a N7100 south american modem to fix it, or what.. N7100 Firmware and Modems. Just Modems N7100 Search for N7105 Modems (Haven`t Found Yet) Or i can`t use 3G i (HowTos)