i did something similar already...

bricked my W810 because my main flash file was corrupted.
i don't really know why it got corrupted, but i downloaded the same file again and it differed in size by a few KB.

anyways.. phone bricked. didn't respond to anything i tried.
went to a SE Shop ("Service Point") and said something like "i went to bed and next day it was powered off and i cant turn it on. charging doesn't work too. so i came here for repair as i still have warranty and need my phone..." or something similar to that...

well after a few weeks i got my phone back :)
its not really my own phone, but A FREAKIN BRAND NEW ONE!!! :cool: :D
weird thing is that it has the same IMEI number as my old phone (compared the IMEI of the phone i got after "repair" to the IMEI written on my purchase bill)

maybe they wrote the old IMEI into the new phone as the old one (meaning the IMEI) isn't in use anymore because of the bricked phone?!

however.. i'm happy with my brand new W810 :D