Thanks for the quick respond to my questions Jasmin.
I tried to set the Comability to Windows XP but still the same problem came.
So I downloaded SE tool Lite and tried that.

Read one of the articles you have written as "sticky" and Flashed my K810 without any problem. But still the same problem is there.

I downloaded the Main and FS firmware. Flashed the telephone with them.
And took out battery, Put it back after 5-10 seconds and started the phone.

Still there is just blinking light coming.
Telephone starts with one vibration...then it starts blinking slowly white.

Any more suggestions???