[Q]Bootloop-Security Error - AT&T LG Optimus G

Hi
I recently bought LG Optimus G E970 and rooted it. then i found a camera mod and I copy mediaprofile.xml file in system/etc. Since then my phone keeps rebooting at LG logo and there is security Error.
i searched and found about a tool "LGNPST" But didn't found any link or i misunderstood. people keep saying that it can solve (un brick ) my phone. and also i don't know how to connect my phone in fastboot. Adb is not working.
Can i flash TWRP/CWM on locked booloader ?
or How can i unbrick my device ?
descriptive answer may be helpfull. and also please explain and attach link of "LGNPST ".
I have downloaded debloated at&t jb firmware zip about 717 MB
i also downloaded CWM 6.027 and TWRP 2.6.3.
Tell me that if i can use them. I m also Downloading at&t JB firmware about 827 MB.

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ShoaibAhmed said:
Hi
I recently bought LG Optimus G E970 and rooted it. then i found a camera mod and I copy mediaprofile.xml file in system/etc. Since then my phone keeps rebooting at LG logo and there is security Error.
i searched and found about a tool "LGNPST" But didn't found any link or i misunderstood. people keep saying that it can solve (un brick ) my phone. and also i don't know how to connect my phone in fastboot. Adb is not working.
Can i flash TWRP/CWM on locked booloader ?
or How can i unbrick my device ?
descriptive answer may be helpfull. and also please explain and attach link of "LGNPST ".
I have downloaded debloated at&t jb firmware zip about 717 MB
i also downloaded CWM 6.027 and TWRP 2.6.3.
Tell me that if i can use them. I m also Downloading at&t JB firmware about 827 MB.
Click to expand...
Click to collapse
Look for Teenybin thread in regular development section. There will be links there for lgnpst, if you use teenybin file it will update to jb partitions, unlock bootloader and install twrp. It will not install an OS so you would boot to recovery and flash custom ROM. Or use lgnpst with stock bin to go back to factory state. You will need to get into download mode to use lgnpst, two methods work.
1.power off phone and plug in micro USB while attached to PC then press volume up + volume down + power.
2.power off phone then connect micro USB to phone while pressing volume up + volume down.

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adfurgerson said:
Look for Teenybin thread in regular development section. There will be links there for lgnpst, if you use teenybin file it will update to jb partitions, unlock bootloader and install twrp. It will not install an OS so you would boot to recovery and flash custom ROM. Or use lgnpst with stock bin to go back to factory state. You will need to get into download mode to use lgnpst, two methods work.
1.power off phone and plug in micro USB while attached to PC then press volume up + volume down + power.
2.power off phone then connect micro USB to phone while pressing volume up + volume down.
Click to expand...
Click to collapse
Can you upload this file ?
LGNPST_LS970.dll

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ShoaibAhmed said:
Can you upload this file ?
LGNPST_LS970.dll
Click to expand...
Click to collapse
https://app.box.com/s/zl0zo123c97z43vs7285
That should get registered automatically if you use tSilenzio lgnpst and right click to run as administrator for install.

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adfurgerson said:
https://app.box.com/s/zl0zo123c97z43vs7285
Click to expand...
Click to collapse
can't register , it says cannot make Xml than error
Edit: i succeced but now i got this error
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
@adfurgerson

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Autoprime is usually logged into this irc, maybe you could ping him.
http://webchat.freenode.net/?channels=lg-optimus-g