increase screen brightness

Hi,
I have the Verizon Galaxy SGS3.
Here is the screen shot to give more info.


I'm trying to increase the brightness of the screen. I read in the below thread about editing the kernel and thereby increasing the brightness, but it did not mention about the latest update since, it is a old one.

http://xdaforums.com/galaxy-s3/development/fix-real-brightness-fix-gs3-3-version-t1791163


I tried to enter some of the codes on the thread below, but it did not work either.
http://xdaforums.com/galaxy-s3/general/samsung-galaxy-s3-codes-secrets-t2098642


So can Any one guide me or help me, on how to increase the brightness on my screen.
I KNOW TO GO INTO SETTINGS-->DEVICE -->DISPLAY-->BRIGHTNESS---> UNCHECK AUTOMATIC BRIGHTNESS AND INCREASE THE BRIGHTNESS LEVEL TO MAXIMUM.
I ALREADY DID THAT.

To be precise, editing the kernel and increasing the brightness - just like rooting. ( You can't root Your phone with a App or some setting.) obviously, You have to connect Your phone to Your computer and do some stuff. So, on those lines, can anyone guide me on how to increase the brightness??)

I'm searching and if someone gives me some useful info. it will be great.

Thank You.

Oh. By the way, The SCH-I535 is rooted

ShapesBlue said:

Looks like your on the 4.3 OTA based on the screenshot. Are you trying to create an easier way to adjust the brightness?

Click to expand...

Click to collapse

Nothing of that sort. I just want to increase the screen brightness.
Just like for a Processor, which is actually locked, and by doing some changes/process/modifications, the speed of the processor can be increased by 10-15%,
similarly, I'm trying to increase the brightness of the display.