Debrand and lock again phopne use XS 3.1 and download
K800_R1JC002_MAIN_GENERIC_WI_RED52
K800_R1JC002_FS_EUROPE_2_RED52 form download area Top Sony - Redireccionando
for debrand and see this link for unlok after debrand http://www.topsony.com/forum/showthread.php?t=6329