[mapaz04]

Put it in bootloader mode, then insert your memory stick n see if that works for you... Also, I dont think that the format of the memory stick makes a difference but I think that the size may, I am using an 8gb sdhc and dont seem to have a problem... also, you say you have RAPH600, I show RAPH800 on mine (maybe the difference from sprint to whatever you have).


EDIT: Also, make sure that the ROM is for your phone, try one of the ones that are known to work, ENERGY/MIGHTY/JUICY/VETVITO/Etc... many chefs, but as stated, make sure you are flashing with the right one. You may have gotten a bad ruu_ also....