[G2 General] Nemesis Rain:
Found a way to unbrick

Hi people ... i found a way to unbrick my D801(can) (who tough was a D803)

for the back ground, i'm not a developer (for now) but i can follow the dev developement no trouble and i usually can help myself (i wish i had fast boot prompt ... easy to fix)

Legend for this post:
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[*][COLOR="SeaGreen"]GREEN = DO[/COLOR][*][COLOR="Red"]RED = DON'T DO[/COLOR] the same error as me
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Why my phone was briked:

Was late and i edited the build.prop(DONT DO THAT, unless you really want it instead of the updater. So ... at the end ... bricked it REALLY hard with a system+recovery flash..​

I will break my post in a few part since I've go trough many "trouble" in 2 days.

So There it goes (sorry for my English):

STEP 1:

Symptoms:

NO boot (LG logo+Led flash then reboot to recovery) [so imo the aboot.img was okay on my device] not important for this trouble

NO recovery ("Black Screen" mode) [because i corrupted it,flashed a 6MB file on it, instead of the 1XMB one] i know my bad, was REALLY late, and i'm dumb

GOT download mode

Tried the OP fix -> Ubuntu Freeze (phone cycle on/off non stop)

NO Fastboot

so step one for me was fixing the Ubuntu Freeze when i plug the phone in "black screen" mode (aka QHSUSB_DLOAD), i found some trouble in the xhci_hcd (USB 3.0 driver in the Ubuntu 12.04) and it's part of the kernel(DAMN)

so i recompiled the kernel(fresh one up to date) with xhci_hcd(usb 3.0) AND ehci_hcd(USB 2.0) as modules and blacklisted xhci. Reboot time

Didn't help me, was on the same boat BUT the cycle on/off was slower. Still too fast for the write (dd if=.. of=..)

next step was to write a script to automate the dd command as soon /dev/sdaX was "online" .... no go for me ... the cycle was too fast .. ended writing file "in" the /dev directory and not on the "node"

edited the fstab to disable every (of the 3X file system) auto mount and tweaked some conf .. but nada in the end

So last resort, try another *NIX like OS, glad i have my server here (FreeBSD 10-p1) and no cycle at all.

"Black screen" mode was stable, so in the hurry and joy, i pushed all the stock image to the phone (EVEN the stock recovery). i was YEAAA it'S working ...

FML ... i've pushed STOCK recovery, NOT TWRP recovery ...... , so fast forward , no way to fix the "stuck to 49%" in R&D flash tool.

Resume of Step 1:

If you get a on/off cycle and it freeze Ubuntu, it caused by your hardware/ubuntu combo, so try another hardware/software combo

for me Freebsd 10P1 does it, so try other *NIX distribution.

Maybe try *not* linux since it seen to be a trouble of the kernel, so try a *BSD Os if you can

IF it work don't FORGET to flash a working TWRP/Philz/CWM recovery, NOT the stock (believe me, headache in the horizon if you do)

STEP 2:

NO boot (LG logo+Led flash then reboot to recovery)

NO recovery (go to recovery then i get the red triangle, so useless)

GOT download mode (but stuck to 49% if i try to flash the KDZ ) method -> http://xdaforums.com/showthread.php?t=2432476

NO "Black Screen" mode ... so i CAN'T push image with dd anymore

NO Fastboot

Done many, many, MANY try, always stuck to 49%. The Easy fix to that is to wipe the device (ALL of it) in TWRP recovery (full wipe) ...

But yea i flashed the stock recovery ... so no Full wipe solution ....

So after a ***** lot of Try ...

i put:

"LG E Mobile USB Serial" to port 41

In R&D Test Tool -> CDMA - SmartPhone

Phone Mode -> Emergency

Choose the up to date STOCK KDZ from LG (i was already in KK, didn't want to downgrade)

CSE WEB upgrade Test

Upgrade Start

Clear Phone Software Update Registry

Country -> Different Country

OK

And it worked for me ... go to 100% the phone rebooted and ...

TADAM , a brand new PHONE ...

hope this help at least 1 person ... and for now ! ... i deserve my beer :cyclops: