Read here: http://www.topsony.com/forum/far-manager-f31/flash-k800-cid53-k810-software-cid53-begginers-t11605-mensaje89845.html#post89845, but use these files:

1. W880_R8BA024_MAIN_GENERIC_AI_RED53 (Downloads > Firmware > W880 > R8BA024_RED53)
2. W880_R8BA024_FS_EUROPE_5_RED53 (Downloads > Firmware > W880 > R8BA024_RED53)
3. HB1-06_Gen_CDA102568_14_R8A_GENERIC_EUROPE_5 (Downloads > Custom Files > w880custpack)