Hi guys, I want to know if my phone has this sds issue.

Before this my phone is behaving strangely, like hang and lag while opening some app or waking up from sleep occasionally, a month ago.

Then yesterday I left the phone charged overnight and next morning it shows the error "firmware update encountered issues, please perform recovery using kies", and stuck at that screen. So wat I did was use emergency recovery thru kies and luckily my phone return to original state.

However later in the afternoon, the phone go wacky and stuck at the screen with many many white stripes. Can't recover using kies anymore. What can I do now, other than sending to service center?

If the pic shown above is stuck at the current screen, is this a sudden death syndrome?
Any workaround?

The chronological event is recorded in the spoiler below fyi