Here's a debranding tutorial :
http://www.topsony.com/forum/tutoria...html#post83262 and the files you need are in the download section:
K800_R8BF003_MAIN_GENERIC_WI_RED53
K800_R8BF003_FS_EUROPE_2_RED53 and as a custom file
HB1-06_Gen_CDA102568_11_R8A_GENERIC_EUROPE_2.
Once debranded, you can unlock your phone:
http://www.topsony.com/forum/far-man...tml#post111201
See also this:
http://www.topsony.com/forum/video-t...tml#post112515




