How to find out which firmware is suitable for my W550i?

I am really confused which firmware files should i use for flashing my SE w550i?
Some days ago, I flashed my cell with the following files, the phone is working but the display of my cell have lost its colors, not all colors are gone...but it looks like when we change hue options in photoshop on particular image. more whiteness is present on display rather than colors.
I thought the display never be alive again, but yesterday when i switch off and on the phone , the phone got its colors back.

so i think it may be firmware that i installed that causes me problem, i update the phone using SE update tool but no use.

Files i used:

W550_R4CB020_FS_EMEA_6_RED49.fbn

W550_R4CB020_MAIN_GENERIC_EL_RED49.mbn

W550i_CDA102415_89_R3A_Generic_Trade_India

I am living in INdia , please help me, thanks in advance....!:a001