Step to get your IS11S function fully but 3G (EDGE is OK): 1. Unlock your phone: you will need some money. 2. Download "IS11S_4.0.1.B.0.112_KDDI.ftf" & "LT18i_4.1.B.0.587_(1254-2184).ftf" or Gingerbread version (google them). 3. Open "IS11S_4.0.1.B.0.112_KDDI.ftf" with 7-zip and extract "loader.sin" & "amss_fs.sin". 4. Open "LT18i_4.1.B.0.587_(1254-2184).ftf" or Gingerbread version with 7-zip and move "loader.sin" & "amss_fs.sin" into it. Delete "amss_fs_ayame.sin". 5. Flash edited "LT18i_4.1.B.0.587_(1254-2184).ftf" or Gingerbread version by Flashtool (mine is 0.8.5.0). Đức làm tựa như trên ok, mở file máy đang làm bằng 7-zip rồi thay 2 file .sin của máy bạn vào LT18i mới ok được