I have been trying to update my Sony Ericsson K750i’s firmware for a few days but my Internet was so slow that the update software couldn’t even finish updates that are required even before you download the updated firmware but finally i have done it.The only difficult part was downloading the Update Software’s own updates and then the process was much easier and i downloaded the new firmware in about 10 minutes and in another 5 minutes it installed the new firmware onto my K750i but i haven’t seen any huge changes which i expected from this new firmware named R1DB001.