K800 dead due to installing R1KG001

Hi
Can anybody help.I have a k800 mobile and the camera function was not working.I took it to the o2 shop and they recommended going to the Sony Ericsson site and download new software from their site,I completed this and downloaded the new software following all instructions.When I removed and replaced the battery and turned the phone on .The Sony ericsson symbol and writing appeared and then the screen started to flash with only a glimpse of the words "software update" flashing occasionally in the background.Then the screen "blackens" and you can no longer see anything.Is the phone dead or can I reinstall a software update prior to the R1KG001 update?

Can anybody assist?
Thank you John

yes u can but becuse u have used the seus u will now have a cid 53 phone and use jd flasher download se tool lite and use that to get a read out if not sure post a log up from it with out imei no