Read here: http://www.topsony.com/forum/showthread.php?t=6329 A. How to apply the generated patches to DB2010 CID49 phones
Edit: I suggest you to reflash with R4EA031_RED49 firmware, because W810_R4ED001_MAIN_GENERIC is difficult to find and you'll need it for the .vkp patch and for the rest file. If I'm not wrong, R4EA031_CXC1250231_GENERIC_CO is already in the "rest" folder from Setool, so you don't have to create it.