I used W580_R8BE001_MAIN_GENERIC_LA_RED52.mbn to generate the quick access and unlock patches, and I have W580_R8BE001_FS_AMERICA_2_RED52.fbn &
W580_CDA102568_107_R8A_GENERIC_AMERICA_2 on my phone.
I do see that MAIN_GENERIC and FS_AMERICA_2 is kinda mis-matched, if that makes any difference. MAIN_NAM with AMERICA .. MAIN_GENERIC with EUROPE or APAC