I had been installed a CM 10 Stable with CWM on my LG G2 (D802). I've tried to flash a stock KitKat Rom for my phone, using this tutorial:
I was hoping, that i can easily make a backup with cwm, flash the zips and check the factory rom out. The process crashed (perhaps because I had cwm), and i was trying to reboot the phone into the recovery mode. But instead, the default factory reset gui from lg occurs and after a confirmation comes a screen with the message "boot certification verify, Secure booting error, Cause: boot certification error".
It seems, that my cwm recovery is also flashed with a new kernel. I can't get into the recovery and download-mode.
In the next step I have tried this:http://forum.xda-developers.com/show....php?t=2582142
and then: http://forum.xda-developers.com/show....php?t=2451696
The single steps passed without errors, but nothing changed.
Is there any other possibility to unbrick my phone?
Sorry for my english