anyone can help me?

my phone is dead..
not 'fully' dead..

after i turn it on,
it shows start up screen,,flight mode o not..then sim card pin code,,
after that,,it only show



configuration error.
please contact your
network operator or
service center..

i tried to flash it back,but there's no change..
these happen after i try to apply quick access to my fon..

k550i flashed to w610..

help me!!