Secure boot error (demigod crash handler)

Hey all. So I bricked my phone.
first i have root phone using stump root on stock 4.4.2 then I flashed official lolipop 5.0 firmware using LG Flash tool... It's been bricked from yesterday... HELP NEEDED!
When I plug it into my computer, it's recognizable via COMPORT Only... "LGE Comport" So today I tried ubuntu and I got a line on my phone that says "fastboot: processing commands" I thought that was good so I went ahead and got the things I need for ubuntu and followed a guide: http://forum.xda-developers.com/show....php?t=2582142

Quote:

Heres what I got: When I do the /dev/sd* mine shows: root@ubuntu:~# ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda5 /dev/sda6 So using what I got I moved onto the next step gdisk -l /dev/sdb I got: root@ubuntu:~# gdisk -l /dev/sdb GPT fdisk (gdisk) version 0.8.8 Problem opening /dev/sdb for reading! Error is 2. The specified file does not exist! So since mine showed "sda" and not "sdb" I tried it with the highest number I had (6) with sda. I got: root@ubuntu:~# gdisk -l /dev/sda6 GPT fdisk (gdisk) version 0.8.8 Partition table scan: MBR: not present BSD: not present APM: not present GPT: not present Creating new GPT entries. Disk /dev/sda6: 147367936 sectors, 70.3 GiB Logical sector size: 512 bytes Disk identifier (GUID): 914599DB-77C6-4F8A-87B9-7DD5A240D111 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 147367902 Partitions will be aligned on 2048-sector boundaries Total free space is 147367869 sectors (70.3 GiB)

Number Start (sector) End (sector) Size Code Name

I am so lost and I don't know what I'm doing wrong and I don't know what else to do. All the guides I've found online, have not done me any good. So again, I don't know what I'm doing wrong.

Can someone please please please help me.
Thanks in advance! :(