When booted up, K4 note boots till boot logo and restarts in an infinte loop

[Kartik Shankhavaram]

Hey!
I tried to unlock the bootloader of my K4 note (with stock marshmallow rom) yesterday with
fastboot oem unlock
The unlock succeeded when I pressed the Volume Up button to confirm it. Then it showed me a screen to select where to boot(system, recovery, bootloader). I had to scroll the options with the volume down key, and then select it with the volume up key. But none of the volume rocker buttons responded. I couldn't select where to boot. Then, with the fastboot flash recovery command, I flashed the TWRP for stock ROM available in the Download section of this thread. But still the buttons did not respond, and fastboot reboot bootloader gave me this message:

C:\Users\Kartik Shankhavaram>fastboot reboot bootloader
rebooting into bootloader...
FAILED (remote: not support on security)
finished. total time: 0.012s

So I did fastboot reboot, and since then, the device has gone into an endless boot loop. It shows me the boot logo, then vibrates and restarts again.
When I press 'Power+Volume UP', I get the message

Have been in factory mode, Long press the power button and the normal boot

Then, it starts the loop again.
With 'Power+Volume Down', I get

Have been in meta mode, Long press the power button and the normal boot

and the same loop happens.

I read many articles about this and most of them suggest a problem with hardware or water in the phone. But my device was working when I connected it and not a drop of water fell on it, nor did it fall anywhere.

I'm at a loss and don't know what to do. Any help would be appreciated.

Thanks!

 

[mohancm]

You need to flash stock ROM again.
And, after unlocking boot loader, you need to reboot to system properly and flash recovery

 

[Kartik Shankhavaram]

You need to flash stock ROM again.
And, after unlocking boot loader, you need to reboot to system properly and flash recovery

Thanks! Will do.

 

[tushar.2nov]

Thanks! Will do.

were you able to recover the device ? I also have similar issue