Hello there, I have the same problem with the same w810i, I flashed it with XS++3.1 and Far Manager softs with the firmware R4EA031_MAIN_GENERIC_HN_RED49, I do this yesterday, and now is gone, nothing, dont want to boot just the screen flashing white, I thought that is normal and desapear in few secs but I leave the phone all night and now continue apearing the white screen, Im going to try to flashing with xs++3.1, I hope this can fix it, or I going to be waiting for be available to download the new firmware R4EK001 (RED49/RED50). I want my phone back to life :(