So I tried flashing the files through recovery , it was successful but I didnt noticed any changed so I went to the location manually to inspect of any change in the code. But couldn't verify any change.
So I used X-plore with all the permissions possible and wrote the perm 777 on the file media_profiles.xml .
Initialized the camera application and tried to capture 1080p video where it suddenly crashed.
Realizing that the change in code was must have went haywire somewhere I tried to flash the .zip file using TWRP recovery. The zip was flashed successfully but the device went in bootloop. I had logcat installed so I was able to see some looping codes at bootup.
Now , to resolve this I tried wiping out everything except /system , but nothing worked.
Well , I had made a backup of the rom a few days ago , will try to see if I can restore it . Fortunately we guys have a SD card facility in LGOG At&T , as my backup resides on my PC!!. :sigh:
Will try this again , unless the device gets hard bricked while restoring or fixing the current issue.( unlikely , but who knows. )