[G2 General] 05UFCaptain:
Trying to avoid the same... "IT'S A TRAP!!"

Hey everybody! While I'm obviously new to XDA, I'm openly an Android newb as well. That said, I am a long time lurker, just a first time poster with a situation that strikingly similar to dotjsx.

After taking the OTA to 4.4.2 when it initially released for the ATT G2 (D800), I used thecubed's ioroot25 about a month ago, and I've ignorantly and UNSUCCESSFULLY been trying to install TWRP-2.7.1.0 up until about a day ago when my phone bricked to "error: boot certification verify" using the "flashify - for root users" application from the play store. When this initially happened, I was able to simply restart the phone and everything was fine. However, very shortly after that same initial restart, the phone seemingly automatically started taking the current OTA (I'm assuming some dumb ATT rev to 4.4.2 to break root), which I immediately attempted to cancel. The ensuing auto restart resulted in the same "error: boot certification verify" lg flash screen that eventually swaps to the black backlight that can't be turned off until the battery dies.

In windows, the device manager recognizes the phone as QHSUSB_BULK, and I've successfully retrieved the following output from the knoppix live usb that I'm currently troubleshooting with.

knoppix@Microknoppix:~$ gdisk -l /dev/sdc
GPT fdisk (gdisk) version 0.8.5

Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sdc: 61071360 sectors, 29.1 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 98101B32-BBE2-4BF2-A06E-2BB33D000C20
Partition table holds up to 40 entries
First usable sector is 34, last usable sector is 61071326
Partitions will be aligned on 2-sector boundaries
Total free space is 237512 sectors (116.0 MiB)

Number Start (sector) End (sector) Size Code Name
1 32768 163839 64.0 MiB 0700 modem
2 163840 165887 1024.0 KiB FFFF sbl1
3 165888 166911 512.0 KiB FFFF dbi
4 196608 197631 512.0 KiB FFFF DDR
5 229376 231423 1024.0 KiB FFFF aboot
6 231424 233471 1024.0 KiB FFFF rpm
7 262144 294911 16.0 MiB FFFF boot
8 294912 296959 1024.0 KiB FFFF tz
9 296960 296961 1024 bytes 0700 pad
10 327680 333823 3.0 MiB FFFF modemst1
11 333824 339967 3.0 MiB FFFF modemst2
12 339968 339969 1024 bytes FFFF pad1
13 360448 393215 16.0 MiB FFFF misc
14 393216 458751 32.0 MiB 0700 persist
15 458752 491519 16.0 MiB FFFF recovery
16 491520 497663 3.0 MiB FFFF fsg
17 524288 525311 512.0 KiB FFFF fsc
18 525312 526335 512.0 KiB FFFF ssd
19 526336 526337 1024 bytes FFFF pad2
20 526338 527361 512.0 KiB FFFF encrypt
21 557056 573439 8.0 MiB 0700 drm
22 573440 589823 8.0 MiB 0700 sns
23 589824 622591 16.0 MiB 0700 ve
24 622592 688127 32.0 MiB FFFF laf
25 688128 753663 32.0 MiB FFFF fota
26 753664 819199 32.0 MiB 0700 mpt
27 819200 884735 32.0 MiB 0700 carrier
28 884736 901119 8.0 MiB 0700 eri
29 901120 905215 2.0 MiB FFFF blus
30 905216 906239 512.0 KiB FFFF dbibak
31 906240 908287 1024.0 KiB FFFF rpmbak
32 908288 910335 1024.0 KiB FFFF tzbak
33 910336 910351 8.0 KiB FFFF rct
34 917504 7733247 3.2 GiB 0700 system
35 7733248 9371647 800.0 MiB 0700 cache
36 9371648 9535487 80.0 MiB 0700 tombstones
37 9535488 9568255 16.0 MiB 0700 spare
38 9568256 61046783 24.5 GiB 0700 userdata
39 61046784 61071326 12.0 MiB 0700 grow

So, I think I've still got a shot with this one, but since I've never had any version of twrp ever installed on the phone, based on dotjsx's post, I'm concerned about sending a dd command of a twrp recovery into it. Also, I thought I read in one post that all the commands should be dd in as quickly as possible so I should paste following in one command and then hit "ENTER" as oppose to entering each line one at a time and hitting "ENTER" after each line.

dd if=/home/knoppix/Desktop/aboot.img of=/dev/sdc5

dd if=/home/knoppix/Desktop/rpm.img of=/dev/sdc6

dd if=/home/knoppix/Desktop/tz.img of=/dev/sdc8

dd if=/home/knoppix/Desktop/openrecovery-twrp-2.7.1.0-g2d800 of=/dev/sdc15

Should I dd a stock ATT recovery.img(does one exist?) to sdc15, or am I ok with the openrecovery-twrp-2.7.1.0-g2d800 to sdc15? Assuming the openrecovery-twrp-2.7.1.0-g2d800 should work, should the command be

dd if=/home/knoppix/Desktop/openrecovery-twrp-2.7.1.0-g2d800 of=/dev/sdc15

or

dd if=/home/knoppix/Desktop/openrecovery-twrp-2.7.1.0-g2d800.img of=/dev/sdc15

Also, should I enter the dd commands one at a time or copy/paste them all at once? Lastly, over on androidforums.com at (hxxp://androidforums.com/t-lg-g2-all-things-root/841671-did-i-just-brick-my-new-lg-g2.html), the OP was instructed to dd in

boot.img

laf.img

in addition to the

aboot.img

rpm.img

tz.img

recovery.img

that I am planning to dd in. Should I dd boot.img and laf.img to sdc7 and sdc24 as well? Thanks in advance for any help that you can provide.

-Nick