Develop Bugs

how to recovery e975 if "kdz not work"

Hi, this is my mini guide to recovery in original lg e975... If any method does not work then use this!!
I have test it on my lg e975 bricked thanks twp recovery e970 !!! kdz not working ... error!!!
1- buy this cable to set usb 910k or similar cable important is "mode 910k"(http://www.ebay.com/itm/4in1-Micro-...999-P990-P970-flash-unlock-MORE-/261019033382)
2- download LG MOBILE SUPPORT TOOL from http://www.lg.com/sg/support-mobile/lg-Optimus-G-LG-E975
3- shutdown phone
4- connect cable to 910k at phone
5- start lg support tool and install driver
6- you will see that lg support tool has found your phone
7- go in support > Emergency & recovery mode> write your imei and press check (wait 1 minute after "OK" to start upgrade tool) upgrade process is 10-15 minutes
7-after upgrade is finished it restart phone automatically
If you have change partition after update could stuck on logo lg ... how to fix it:
- shutdown phone and press hold key volume- and power for 15s and it reset software-
Sorry my bad english!!!!!!!

I have done these steps with the regular cable that came with my phone lol. No special cable needed.
you can get into the flash mode by holding down vol up and vol down while connecting it to USB.

If you can enter download mode, you can use KDZ updater,without any problems. LG mobile tool will work only on stock rom.If you are on custom rom,no luck with it.
Besides, with kdz updater you don't have to wait everytime to download the KDZ from lg server, you can use local image.
But if you can't enter download mode, the only way is the JTAG.

But if I have problems to flash with kdz and yet also "LG support tool", but I can get into download mode, how can I fix it?
I have the animated LG logo bootloop after trying to flash via kdz with CM11 installed ...
G support tool gets stuck at 15, but unplugging the USB cable from e975 and reattaching it, the procedure is completed, but say me: Battery level low even though I have 100%. Why?
Bye, Thanks

KDZ updater not working
I had TWRP 3.0.0 then i tried to flash lower version i think it is TWRP2.5.6, after i flashed it i restarted and went to recovery mode, but there was no recovery mode, only black screen... I tried with KDZ updater to flash stock rom V10H but after KDZ extracts files, connect to phone, says that its starting to s/w upgrade and my phone restarts and goes to fastboot mode, and KDZ updater stays like that, doesn't do anything, I tried it on two different computers, Win 10 and Win XP.. I still have my software on (ubuntu touch by mordesku) but i want to go back to CWM. Can somebody help me?

[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

security verification boot error... :(

i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..

bishal_red_rvp said:
i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..
Click to expand...
Click to collapse
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359

bishal_red_rvp said:
i have facing this issue since when i unroot my g3 d855 then i forget to close the lg flash tool and accidently i plugged my phone to computer then it went to firmware upgrade mode then i unplugged immediately.Since then my phone stuck in security boot error and i cant go to download mode and the recovery(power+volume down) is also not working,plz help plz..
Click to expand...
Click to collapse
FIRST install the DRIVER from this thread: http://forum.xda-developers.com/showthread.php?t=2785089
See in the part 2015 with TOT files...
(if any other drivers are present, uninstall them and do a clean install)
You need to get in Download mode to be able to fix it without having to open the phone.
1. Unplug phone from pc and power off
2. Remove back cover and remove the battery
3. Plug the micro-usb cable into the phone
4. Press and HOLD the VOLUME DOWN (make sure you press it from the edge, far from the powerbutton)
5. Put the battery - Dont let go of Volume Down yet.
6. Connect the micro-usb cable to the pc - Dont let go of volume down yet
7. Wait for the pc to recognize it, and the download mode appears on the phone, now you can let go of volume down
Repeat again, first time might not work.
Post results here...
PS, quote me because i might not see and answer then. good luck

Can't get into bootloader! G3 D850

edit: Can't change title, it's actually download mode I cannot get into.
So I need to bring my phone to stock. Not for the first time.
However now when I try to get into download mode (Take out batt, hold vol up and plug phone into pc) nothing happens except a triangle with ! in it.
If I try to do it but keep the battery in, it goes to download mode. I can assign port etc, but when I run LGFlashtool it does not see the phone at all.
This happens with any rom it has installed on it.
Any ideas guys?

D850 Bootloader
ComradeZ said:
edit: Can't change title, it's actually download mode I cannot get into.
So I need to bring my phone to stock. Not for the first time.
However now when I try to get into download mode (Take out batt, hold vol up and plug phone into pc) nothing happens except a triangle with ! in it.
If I try to do it but keep the battery in, it goes to download mode. I can assign port etc, but when I run LGFlashtool it does not see the phone at all.
This happens with any rom it has installed on it.
Any ideas guys?
Click to expand...
Click to collapse
When you connect your device to your computer with the triangle on the screen, what does Windows device manager see the phone as? Does it say Qualcomm or LG USB? You may have to run the LG diagnostic tool to repair phone?

Can't access download mode or recovery. LGUP and LG Flash tools fail too

I was using a D850 on Fulmics 7.6. This morning, my phone crashed unexpectedly. Tried to restart it, but it will stay on for a minute, then dies again. Tried to go into recovery to reflash Fulmics but again: on for a minute, crash. Someone suggested trying Lineage OS, but that one keeps getting errors mounting the SD card and whatnot. Tried to wipe all partitions and try again, still nothing. Tried to go back to stock, successfully got into download mode and started LG Flash tools, but I get a Download Failed error. After that, download mode wouldn't work anymore. Tried using Androidbrick G3 unbrick, and was able to get Download Mode to work again (goes to the firmware update page), but still LG Flash tools failed again, and now it won't go back into Download Mode. Should I throw in the towel at this point?
When I do plug it into the computer, I do see the Download Mode screen, but then the display turns off and in my device manager, the phone is a Qualcomm hub 9008 or something like that.