K800 to K810 result screen flashing white

[k8oonad]

Use SE Tool Lite
click on repairing tab
press 2+5 while connecting.

try this for 6 to 8 times.
if not work then try pressing c
after some time your gdfs will get in mode for repairing.
after that connect your phone pressing c. then restore the GDFS (hope u created back up before)

then restore original firmware.

[velizarcho12]

probably your phones GDFS is DEAD
do you heave any GDFS Backup?

Fortunately, I had backup of my GDFS.. There is NOTHING WRONG with it, otherwise the phone will be DEAD and method "press C and connect USB" does not work and the phone won't boot up! I restored my GDFS and the result is again white screen blinking.. I gave up this upgrade and flashed with K800 firm...