Develop Bugs

[Q] Bricked - No LG Logo, No DL Mode, USB "Sounds"

Hello, first I'd like to thank you for your time reading this.
Note: I've searched the forums a lot, even for other LG Devices (G2 for ex) but I couldn't find a solution.
Trying to flash CM12 by _infected (amazing rom, working as a daily driver on my other lg pad btw) and messed up something on TWRP.
-First trying to do a Factory Reset via TWRP gave me "failed to mount /data" and "/system" I rebooted and the device went straight to TWRP Recovery, I rebooted again, this time making sure I selected "Reboot to System" and it went again to TWRP Recovery...
- I did another wipe, this time wiped everything (all checkboxes in TWRP), reboot and... no boot...
Now my LG Pad is at the following State:
- Black Screen (No LG Logo)
- Connecting USB to Windows gives the "connected sound"
- Adb doesnt find device (driver was installed and working).
- Device Manager "refreshes" on USB plug but doesnt show the device (or I can't find it?).
- Holding Power on the tablet while USB plugged to Windows gives the "disconnected sound" -> "connected sound" -> "connected sound".
- Can't boot into Download Mode.
- Can't turn off the Tablet... only Reboots holding Power key.
Please? Any help?
What can I do?
Is warranty void at this point?
Thank you very much for any help you can provide.

I have a G pad in the same situation, and I wasn't able to fix it. I managed to pick up another cheap one, but I'll follow this thread in case you get an answer.

You have to find a way to get it into download mode or you wont be able to fix it with LG Tool

What did you mess up, and how did you install twrp ? Also what twrp version abd base.

mekoneko said:
What did you mess up, and how did you install twrp ? Also what twrp version abd base.
Click to expand...
Click to collapse
For me personally, I assumed it'd be as easy as the twrp page makes it out to be , or my nexus 4 was, so I just went for it. I ran into that secure boot error with twrp, and rebooted back into stock. There was an OTA update, so I did it (stupid I now realise) and that bricked it on reboot. It won't turn on at all. If i plug into USB on a computer it OCCASIONALLY brings something up on the screen, the LG logo I think or something, but I cannot for the life of me get it into download mode. It's at home right now, so ic anot remmeber the exact thing it shows on screen, but almost certainly not download mode, and none of the hardware buttons seem to be responsive for doing factory resets or download or anything.

I managed to send the LG G Pad to warranty and got a new one... Lucky me...
Guess that if we can't get into DL mode they can't either.
However after much investigation I've realized that the problem was a corrupted system partition...

[HELP] - Soft Bricked G3 D852 (Rogers) - No Download Mode. Stuck at FW Update Screen

Hello all,
I've done a lot of googling and searching on these forums and I'm having no luck. Hopefully by asking I can get some headway.
I was attempting to restore to stock rom. At 17% of the process using LGFlashTool 1.8.6 the tool gave me an error 'Unable to Communicate with phone' after about 10 minutes of no progress. I exited the LGFlashTool program and ran it again and now it fails saying 'Cant' change to download mode". If I turn the phone off and then press Vol+ and plug in my cable it just goes to the Firmware Update screen. My phone *IS* detected properly in the device manager as LGE Andriod MTP Device and under ports as LGE Mobile USB Serial Port (COM41). If I go into recovery (Vol- and power) it asks if I want to do the restore - but it doesn't actually do anything once I say yes twice. Just sits at the firmware update screen at 0%.
I looked at this post (http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091) but it appears to be either for a different phone or different problem (showing in device manager as a bulk device - mine is not doing that). Frankly I don't want to make things worse (if that's possible)
Does anyone have a way that I can restore the download mode for this D852 phone? I'm hoping if I can get download mode to work again I can reflash the stock rom. I don't care about the data on the phone at this point.
I'm willing to send some $$$ via paypal to whomever can get me back up and running! Thanks

Valgore said:
Hello all,
I've done a lot of googling and searching on these forums and I'm having no luck. Hopefully by asking I can get some headway.
I was attempting to restore to stock rom. At 17% of the process using LGFlashTool 1.8.6 the tool gave me an error 'Unable to Communicate with phone' after about 10 minutes of no progress. I exited the LGFlashTool program and ran it again and now it fails saying 'Cant' change to download mode". If I turn the phone off and then press Vol+ and plug in my cable it just goes to the Firmware Update screen. My phone *IS* detected properly in the device manager as LGE Andriod MTP Device and under ports as LGE Mobile USB Serial Port (COM41). If I go into recovery (Vol- and power) it asks if I want to do the restore - but it doesn't actually do anything once I say yes twice. Just sits at the firmware update screen at 0%.
I looked at this post (http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091) but it appears to be either for a different phone or different problem (showing in device manager as a bulk device - mine is not doing that). Frankly I don't want to make things worse (if that's possible)
Does anyone have a way that I can restore the download mode for this D852 phone? I'm hoping if I can get download mode to work again I can reflash the stock rom. I don't care about the data on the phone at this point.
I'm willing to send some $$$ via paypal to whomever can get me back up and running! Thanks
Click to expand...
Click to collapse
What happens when u just power up the phone ?

Thanks for the reply.
If I shut the phone down (by pulling battery) then plug it back in and just power it on, I get the LG logo then it goes to the firmware update screen with 'USER B84" in the box below the progress bar. Progress bar never moves. I get to this screen whether I start it in recovery (which is just the factory recov - looks like during the initial 17% it wiped out my TWRP), attempt to start it in download mode (I do not get the download mode screen with the blue dots anymore), or regularly by just holding the power button.

ok
Dont plug it into the computer and try to power it up what does ot do?

Same thing.

read this
http://forum.xda-developers.com/lg-g3/help/lg-g3-bricked-tried-everything-experts-t2852962 this might help

pacods61 said:
http://forum.xda-developers.com/lg-g3/help/lg-g3-bricked-tried-everything-experts-t2852962 this might help
Click to expand...
Click to collapse
Ok that didn't work for me but I did try the LGFlashTool using Board DL instead of Upgrade DL and it was moving a bit. Finally got to 10% and failed at 574 sec with the error "We can't communicate with Phone". I am using the cable that came with the phone. It isn't damaged or anything.
Here's what is shows in the LG Flashtool window (this is port 1 (com41)
Code:
PID: BS09S150309001007
IMEI: <myimei>
Model: D852
DLL: D852
BIN: <correct bin file from stock roms>
SWV: LGD852AT-01-V20C-302-720-FEB-04-(cuts off here can't read rest)
SWOV: LGD852AT-00-V20C-RGS-CA-FEB-04(cuts off here can't read rest)
Initializing
USB Connection Established
Start Download
LAF: Bin_User_Mode
PRIMARYGPT
MODEM
LAF:Bin_User_Mode
PRIMARYGPT
LAF:Bin_User_Mode
PRIMARYGPT
MODEM
[14: 7:28) We can't communicate with phone
00000064
On the phone it shows COM41 under the usb icon on under firmware update and 0% progress. In the box below it says:
Code:
F USER 50.0 A50.0 B70 UHS
S U LG-D852 04.4.2 Hrev_10
D85210b
D85210b
That's it. Should I leave the phone connected at this point or unplug it? Device still shown in device manager (have had it up beside the LG Flashtool window the whole time. I do see it refresh from time to time but the contents dont' seem to change at all.

Ok so I left this over night and when I checked the phone this morning it's different but I don't think it's good.
Looks like it proceeded but ended with:
FBOOT Check
FBOOT Complete Time [0s ] 1th try
Factory Reset Flag = 2
Factory Reset Flag Check Fail!!!
And my phone has a blue screen with Factory Reset Status and a big red '2'
Now what do I do?

Some further information.
If I run the LGFlashTool in Board DL action mode, it seems like the process works but I end up with the red 2 on the screen. But I don't get 'can't change to download mode' or 'cannot communicate with phone' errors.
However if I choose Upgrade DL action mode, then I get 'can't change to download mode' or cannot communicate with phone'. ARGH. What gives?
I have tried things like fresh restarts (restarting PC), restarting the LG FlashTool between attempts, not restarting flashtool, etc. I can't seem to find the sweet spot.

here
http://forum.xda-developers.com/sprint-lg-g3/help/fix-bricked-lg-g3-ls990-stuck-fastboot-t3084562 another tutorial to try

Thanks, but no dice.
I don't get fastboot options, and if i download and attempt to use fastboot, it shows no devices.
Also, when following the steps for the BOARD DL option in the lg flashtool, it goes through the process but I get no ATT screen. Nor do I get the option to tap OK or Normal - as soon as my device reboots after the flash, it gives me a MINI OS (iirc) screen with a bunch of vertical bars below it moving up and down then it changes to the Factory Reset screen with the number 2.

last one lol
http://androidforums.com/threads/ho...-2-lg-g3-d855-twn-32-gb-problem-fixed.911271/ i found one more that could help it said to use a jdz not a tot hope it helps if not sry

Thanks - I'm going to give this a try, however I can't finda .kdz file for my phone (canada/rogers D852 LG G3) - the links in that post that link to firmware is for a tot file. Does anyone have a link to the KDZ?

Hi, I'm having the exact same problem now, where the phone only boots to the Firmware Update screen. Did you manage to fix it?

Indeed.
I used the KDZ method pacods61 posted last, but I had trouble actually finding kdz firmware. With some help I finally managed to do so from here: http://devtester.ro/projects/lg-firmwares/country.php?country=Canada
Direct link for D852 Rogers Lolipop 5.0.1: http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FWF448V332CPAKX8CEA4UCE/D85220g_00_1205.kdz

LG PC Suite, Firmware Update Stuck

Hello ! I have a big problem
I tried to restore my phone with LG PC Suite after some problem, he needs to go on warranty but i was rooted and twrp recovery so i tried to have a "stock phone" before it
I have done a "restore error..." on LG PC Suite but now my phone is sutck on Do not unplug the USB connection and in a square "U USER S0.0 AS0.0 B89 UHS
S U LG D855 05.0 Hrev_10
D85520h
D85521a"
I cannot acces to recovery and the phone won't boot, it always go on firmware update ... I had some files that i haven't saved, they are lost ? How can i do to unstuck it ?
My phone will go to my seller for warranty because I had a lot of other problem before ... When i tried to restore error, that's because i had bootloop, freeze, lag (on every rom i tried, even old save), the plastic around the mic (up and down) is broken (a lot of G3 have this problem) and my screen is yellow (due to the glue) on the left top corner or my SIM card wasn't always detected (but she works fine on others phones) but if i can save some files ... But I have no hope, I know Android ... This is my third phone bricked or with problem

Can you boot into download mode?

LG G4 H81510h download mode not working

Hello Gurus,
Well i am trying to boot my phone into download mode but i am continuously getting
secure booting error 1014 and my phone then boots lollipop 5.1 which is stock rom.
my lg g4 model is h81510h build number lmy47d, it is not rooting or flashed anyway.
I want to flash flash marshmallow kdz with lg flash tool but my phone is not booting into download mode, please help or suggest any other method

HALP PLS
I'm having more or less the same problem. I bought a used H815 and it came with Android 5.1 (software version h81510h)rooted and stock recovery. I tried upgrading to MM over OTA but tapping Update Center leads me directly to the App Update screen instead of giving me a choice between software update and app update.
That is when I decided to go the KDZ route but when i tried switching the phone to download mode it went there and in the top left corner there was this 'Secure Booting Error 1014' message and then it restarted in about 5 seconds. I have tried this multiple times with the same exact result.
ADB detects my phone but when I send the 'reboot bootloader' command it just does a plain reboot so I can't use any of the fastboot commands. I also have no idea whether this phone has an unlocked bootloader or not.
Also for some weird reason my phone is not using the MTP mode when I connect it to my PC. It either uses PTP or charge-only depending on what I select but if I select MTP it automatically reverts to the previously selected mode. LG Bridge doesn't detect it and neither does the Mobile Support Tool but I can transfer images just fine. MTP was working last night but it suddenly stopped working and I have no clue why.
I can get into the recovery without any problems.
Please help me get it working again

you-mair said:
I'm having more or less the same problem. I bought a used H815 and it came with Android 5.1 (software version h81510h)rooted and stock recovery. I tried upgrading to MM over OTA but tapping Update Center leads me directly to the App Update screen instead of giving me a choice between software update and app update.
That is when I decided to go the KDZ route but when i tried switching the phone to download mode it went there and in the top left corner there was this 'Secure Booting Error 1014' message and then it restarted in about 5 seconds. I have tried this multiple times with the same exact result.
ADB detects my phone but when I send the 'reboot bootloader' command it just does a plain reboot so I can't use any of the fastboot commands. I also have no idea whether this phone has an unlocked bootloader or not.
Also for some weird reason my phone is not using the MTP mode when I connect it to my PC. It either uses PTP or charge-only depending on what I select but if I select MTP it automatically reverts to the previously selected mode. LG Bridge doesn't detect it and neither does the Mobile Support Tool but I can transfer images just fine. MTP was working last night but it suddenly stopped working and I have no clue why.
I can get into the recovery without any problems.
Please help me get it working again
Click to expand...
Click to collapse
Any update ? I am also facing same issue. One wierd thing I noticed that adb devices displays phone as "LGLS991" can you tell me your result of adb devices ?

Im having the same problem.
Lg bridge, lgup and flashtool not detecting my phone. How to flash my phone with any os? Kindly help me

Same problem with my H811. Any solutions?

I cant get my g4 into download mode. I was able to earlier but it died on me. My buddy has the same phone so I am using his fully charged battery now (mine was around 40$) but I'm still getting nothing. Should I reformat the SD card and try again? I can't think of anything else.

Help Unbrick Please - LGVS985 Verizon - Detailed Description of Issues

Hello, so I'm the go to guy for helping with phones, I've been on XDA a few years now, always a nexus nerd, so I'm slightly in a foreign territory as I try to help my brother unbrick his LG G3.
Situation:
- Brother claims he had app updates, and he had the TWRP app installed, he was running Turbo ROM - (https://forum.xda-developers.com/lg-g3/development/rom-turbo-rom-layers-t3346477) latest version Turbo-vs985-4.0-OFFICIAL-20160509.zip (I have the ZIP) - and that he allowed the apps to update, and the TWRP app did it's thing. (I'm not clear weather it was just the APP update, or if he tried to update the Recovery partition via app).
- Next he said either after a restart or crash, the phone just refused to boot. It stayed off, totally (seemingly)
- He did note that he had battery issues few months back, that his battery bloated on him, but he replaced it.
- When I went to pick up phone, he had it off/battery out for a few days, I think the battery still had a charge. we did a Vol Down/Power with charger plugged in, battery in, and it turned on the screen, I think we were looking at stock recovery if I recall correctly. Few seconds later it turned off and never came back on.
My Observations:
- when plugging into computer, I see a device "Qualcomm HS-USB QDLoader 9008 (COM4) - no device "visible" under my computer. (screen never on)
- fastboot and adb both show no devices.
- I used LG Smart Boot Diagnostics Tool 1.3.1 (from guide http://www.androidbrick.com/unbrick-recover-your-dead-lg-g3-g2-all-variants/ ) to try and diagnose it, but every time I choose the right model from the drop down (LGVS985_AVRZ_VRZ), and confirm, it seems to connect correctly, and it starts to display results as OK (there are more to scroll down to see), but then it quickly disconnects, not allowing me to see other results.
- guide seems to be aware of the issue ..."In these situations Smart Boot Diagnosis seems can’t reaching the emmc and 9008 port shuts itself down and comes back (you hear it, like usb unplugged and back in).".... - and recommends using another step highlighted by this guide ( https://forum.xda-developers.com/lg...3-qhsusbbulk-qualcomm-9008-t3072091?nocache=1 )
- This is where I get lost, @willcracker seems to illustrate a need for a tot file, which from what I can gleam is LG's original version of firmware format. And that I need to get the exact version of the TOT that was installed with the ROM?
- I browsed the ROM forum, can't find mentions of a TOT file, but my brother did keep a backup of the Turbo ROM on his internal card, as well as a total TWRP backup of a ROM "2016-06-17--21-31-26_MRA58K" that contains boot/data/system/ .win .win000 .win001 etc. backups, as well as xdabbeb_stock_vs98547a.zip and xdabbeb_vs98535b_bootstack.zip -
SO.... I think I might have all the files Except the TOT to unbrick this thing, but I'm not sure what to do about the TOT part.
Any help is appreciated. Thank you for reading this Wall of text.
PS. He mentioned he was more interested in just grabbing photos from the internal storage, vs fixing the device, but getting the photos and fixing it would be an awesome surprise!
:fingers-crossed: