Develop Bugs

[Q] HELP PLEASE I can't enter download mode or fastboot but can enter twrp and boot!

HI! I recently upgraded to an lg g3 and I immediately installed twrp, and put a custom ROM on, now I want to switch back to the stock firmware. I don't have a backup of the LAF file and I can't enter download mode and fastboot isn't working. When I try to enter download mode (holding down top volume key and plugging into PC [I've tried both usb 3.0 and 2.0 with original cable]), lg logo briefly flashes on screen and blue led flickers then the screen is black and the phone shows up on my computer in device manager as Qualcomm HS-USB QDLoader 9008. I wiped my phone through twrp and restored my early backup from when I had just rooted it but that didn't change anything. Now the thing is, I have twrp installed and I can enter twrp just and the phone boots into any custom rom just fine.. The phone is rooted and has twrp recovery. I need to revert to stock but I can't without download mode or fastboot. Any help would be really appreciated! How can I fix download mode? I'm on an lg vs985. ADB works as well.

7064N said:
....
Click to expand...
Click to collapse
try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf

suljo94 said:
try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Click to expand...
Click to collapse
I have another problem ... I need the stock recovery image from d855 .. Do you have that image ?

Snuk265 said:
I have another problem ... I need the stock recovery image from d855 .. Do you have that image ?
Click to expand...
Click to collapse
why do you need the stock recovery

try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Click to expand...
Click to collapse
Luckily I backed up the laf I think, never wiped storage. I'll give this a shot, thanks!

suljo94 said:
try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Click to expand...
Click to collapse
YES!! THAT WORKED!!! Thank you so much! Laf file if anyone needs it http://goo.gl/EdtEFu

suljo94 said:
why do you need the stock recovery
Click to expand...
Click to collapse
I will revert Form twrp to stock recovery .... I cant find my saved image -.-" i need the recovery for the ota update

suljo94 said:
try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Click to expand...
Click to collapse
Do anyone know to to unbrick G3 D855 ?
No download mode ,No recovry ,Not booting up... (No Root only 4.4.2 stock rom)
I chack in here and can't found any good answer.
Thank you!
This for G2 and with root...
http://forum.xda-developers.com/showthread.php?t=2582142

u1988 said:
Do anyone know to to unbrick G3 D855 ?
No download mode ,No recovry ,Not booting up... (No Root only 4.4.2 stock rom)
I chack in here and can't found any good answer.
Thank you!
This for G2 and with root...
http://forum.xda-developers.com/showthread.php?t=2582142
Click to expand...
Click to collapse
what does it still do? if fastboot mode comes up try downloading twrp from the bump thread and try using the fastboot command(you need adb set up for this)
Code:
fastboot flash recovery >Insert name of the file<

suljo94 said:
what does it still do? if fastboot mode comes up try downloading twrp from the bump thread and try using the fastboot command(you need adb set up for this)
Code:
fastboot flash recovery >Insert name of the file<
Click to expand...
Click to collapse
Thank you for the answer, but His G3 are not with root...it will flash TWRP ?
I saw a few links that tell him to try to enter to fastboot and flash via (cmd) adb fastboot laf.img.
fastboot erase recovery
fastboot erase laf
fastboot flash laf laf.img
fastboot reboot
Click to expand...
Click to collapse
But the stock_partitions files are for 16GB - 4.4.2 and 32GB -5.0 (non- 32 for 4.4.2 it make diffrend?!)
http://forum.gsmhosting.com/vbb/f77...tarted-no-download-mode-1900922/#post10816834
-
http://forum.xda-developers.com/lg-g3/help/tutorial-fixing-fastboot-mode-started-t2995854

u1988 said:
Thank you for the answer, but His G3 are not with root...it will flash TWRP ?
I saw a few links that tell him to try to enter to fastboot and flash via (cmd) adb fastboot laf.img.
But the stock_partitions files are for 16GB - 4.4.2 and 32GB -5.0 (non- 32 for 4.4.2 it make diffrend?!)
http://forum.gsmhosting.com/vbb/f77...tarted-no-download-mode-1900922/#post10816834
-
http://forum.xda-developers.com/lg-g3/help/tutorial-fixing-fastboot-mode-started-t2995854
Click to expand...
Click to collapse
as long as you don't flash anything bet laf and recovery no biggy

Did somone try this?
http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-t3086126

D851
**SOLVED**
Edit:"I installed fastboot drivers, connected phone to PC, used fastboot command <fastboot flash laf laf.img>, and I got download mode back"
Hi, I have D851 running stock 5.0 V20b, it is fully stock with no root and stock recovery, when i try to boot into download mode so I can root it, the csreen goes black and it says
""fastboot started..
Port change..
reset..""
The rest of the screen is blank.
I have the stock laf file for D851 running v20b, how should I flash it without losing my data?
Please be as detailed as possible because I get confused.
Thank you.

Did u do the abd via twrp?
7064N said:
YES!! THAT WORKED!!! Thank you so much! Laf file if anyone needs it http://goo.gl/EdtEFu
Click to expand...
Click to collapse
Sent from my Nexus 6 using Xparent Cyan Tapatalk 2

moosc said:
Did u do the abd via twrp?
Sent from my Nexus 6 using Xparent Cyan Tapatalk 2
Click to expand...
Click to collapse
No I used adb while android was booted.

suljo94 said:
try to get an vs985 laf.img from someone(I can't help because I have an d855) then put it onto the internal memory of your phone and typ this adb command
Code:
adb shell
su
dd if=/sdcard/laf.img of=/dev/block/platform/msm_sdcc.1/by-name/laf
Click to expand...
Click to collapse
You're a lifesaver! THANKS!

D850 laf.img needed
I'm in the same boat. Can't get into download mode after a failed factory reset in cyanogenmod. Anyone have a d850 laf.img ? All I have access to is the TWRP menu.

Same problem
Hi ! I have the same problem with L G3 D855 ! I have already rooted it ! and make an update from the PC suite OTA ( I know this is stupid ) now I can't turn it on ! its shows me error certification verify error ! and when enter to download mode the LED flash blue and the screen is black, and the pc dedicate it as Qualcomm HS-USB QDLoader 9008. I tried flash tool with KDZ file to get it back to stock rom but its stuck in 60% !
any help !

This worked for me
7064N said:
HI! I recently upgraded to an lg g3 and I immediately installed twrp, and put a custom ROM on, now I want to switch back to the stock firmware. I don't have a backup of the LAF file and I can't enter download mode and fastboot isn't working. When I try to enter download mode (holding down top volume key and plugging into PC [I've tried both usb 3.0 and 2.0 with original cable]), lg logo briefly flashes on screen and blue led flickers then the screen is black and the phone shows up on my computer in device manager as Qualcomm HS-USB QDLoader 9008. I wiped my phone through twrp and restored my early backup from when I had just rooted it but that didn't change anything. Now the thing is, I have twrp installed and I can enter twrp just and the phone boots into any custom rom just fine.. The phone is rooted and has twrp recovery. I need to revert to stock but I can't without download mode or fastboot. Any help would be really appreciated! How can I fix download mode? I'm on an lg vs985. ADB works as well.
Click to expand...
Click to collapse
It's not english, it is portuguese Brazil, but it works.
youtube.com/watch?v=gHAA5e2FQbU&index=1&list=LLtlXyuPzN6skeex-P2apfrQ

Snuk265 said:
I have another problem ... I need the stock recovery image from d855 .. Do you have that image ?
Click to expand...
Click to collapse
You can download all stock partitions from here
http://downloads.codefi.re/autoprime/LG/LG_G3/
If you have kdz or tot file you can also extract your recovery, laf and other partitions as well....
---------- Post added at 08:52 AM ---------- Previous post was at 08:49 AM ----------
STALKER18 said:
Hi ! I have the same problem with L G3 D855 ! I have already rooted it ! and make an update from the PC suite OTA ( I know this is stupid ) now I can't turn it on ! its shows me error certification verify error ! and when enter to download mode the LED flash blue and the screen is black, and the pc dedicate it as Qualcomm HS-USB QDLoader 9008. I tried flash tool with KDZ file to get it back to stock rom but its stuck in 60% !
any help !
Click to expand...
Click to collapse
You can try this fix
http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853

Help with unbrick LG G3

Hi,
I felt on a topic who explained how to improve my camera quality with a document from xda : http://forum.xda-developers.com/attachment.php?attachmentid=2793884&stc=1&d=1402564989
I tried it but since then my phone is stuck on bootloop. I can only access the download Mode. I tried to access my phone to back it up with adb shell but adb don't find my phone. LG PC Suite neither, but my computer detect it...
I'm on Lollipop and rooted.
Is there a way to unbrick my phone or accessing my computer to modify my system/etc ? Because I made a backup from the file that I modified.
Thank you for your help.

Ravens28 said:
Hi,
I felt on a topic who explained how to improve my camera quality with a document from xda : http://forum.xda-developers.com/attachment.php?attachmentid=2793884&stc=1&d=1402564989
I tried it but since then my phone is stuck on bootloop. I can only access the download Mode. I tried to access my phone to back it up with adb shell but adb don't find my phone. LG PC Suite neither, but my computer detect it...
I'm on Lollipop and rooted.
Is there a way to unbrick my phone or accessing my computer to modify my system/etc ? Because I made a backup from the file that I modified.
Thank you for your help.
Click to expand...
Click to collapse
Your are only root ? No custom recovery ?
If you have TWRP recovery you can use dd commands

jac10000 said:
Your are only root ? No custom recovery ?
If you have TWRP recovery you can use dd commands
Click to expand...
Click to collapse
TWRP is installed but I tried to access Recovery Mode without success.

Ravens28 said:
TWRP is installed but I tried to access Recovery Mode without success.
Click to expand...
Click to collapse
You can also restore a kdz firmware and use Normal Flash option. It restore only system and you don't lose applications and datas
http://forum.xda-developers.com/showthread.php?t=2785089

jac10000 said:
You can also restore a kdz firmware and use Normal Flash option. It restore only system and you don't lose applications and datas
http://forum.xda-developers.com/showthread.php?t=2785089
Click to expand...
Click to collapse
That seems really nice but It seems that there isn't a kdz file for v20i-EUR...

I've tried but after 15% "verifying Windows OS". It tells me that it doesn't work. I think that he doesn't connect with my phone even if my computer detects it.

Ravens28 said:
I've tried but after 15% "verifying Windows OS". It tells me that it doesn't work. I think that he doesn't connect with my phone even if my computer detects it.
Click to expand...
Click to collapse
Yes me too i have error message, but on the G3 screen we can see the flash to continu, then it restart

jac10000 said:
Yes me too i have error message, but on the G3 screen we can see the flash to continu, then it restart
Click to expand...
Click to collapse
I don't think that we speek about the same error message. Because nothing is happening on my phone. It stays on 0%.
The error message is :
Code:
Please disconnect the cable from your cell phone in order and remove and connect the battery.
Power on your cell phone and press the Restart Button to resume update.
If LG Support Tool is stopped abnormally,try with [Optons]-[Upgrade Recovery] in tool menu.

Ah yes it's not the same
USB2 or USB3 ?

jac10000 said:
Ah yes it's not the same
USB2 or USB3 ?
Click to expand...
Click to collapse
Tried both.
Haaa... If only I could connect to my phone with adb I could replace the corrupted file in system/etc/ or extract my backups from the internal sd card and then trying a complete reset with this solution : http://unbrick.itcse.com/unbrick-soft-bricked-lg-g3/

It worked but with windows 7 ! I was trying with Windows 8.1
Why I don' t know

lg g3 bricked

so the issues goes like that i was using cloudy 2.2 rom my varient was g3f400l i accedently installed 855 version from twrp the fone stated in fastboot mode . using fastboot i erased boot.img modem and recovery img laf.img and also reflashed those file flashboot gave error on partitiongt img file stating tha no file to flash so the fone did start with wrong rom that is d855 with a lot of errors i tried to falsh tot with flashtools it refused to flash stating that i am using wrong file so i edited build pro from d855 to f400l then i entered download mode connected flash tools i did start flash just after laf.img i gives an error stating unable to flash partion some thing like that and stops my fone is permanently in download mode when i turn it on the pc does detect it so as LG support tools but the KDZ flasher never worked for me nor the lg support tools they do download the right file but just as starts to updates it says disconnected check cable( same issue occured when my fone was working properly i tried to flash on windows 8 and windows 7 mechines ) any ways flashtools only flash laf.img and gives error and KDZ flasher for some wired reason didnt flash my fone before. i am thinking if some how i could enter the fastboot mode then i would manually flash all the files included system.img the fone would boot but how to i enter fastboot. and why the kdz never worked for me doesnt it work on win 7 and win 8 or is it the drivers what should i do help really appriciated thanks what if when falsh tools start to flash laf.img i remove the cable so laf.img cannot get flashed would that allow me to enter fastboot or there is any software that would work in download mode and manually flash all the img files plz help me thanks

satirg said:
so the issues goes like that i was using cloudy 2.2 rom my varient was g3f400l i accedently installed 855 version from twrp the fone stated in fastboot mode . using fastboot i erased boot.img modem and recovery img laf.img and also reflashed those file flashboot gave error on partitiongt img file stating tha no file to flash so the fone did start with wrong rom that is d855 with a lot of errors i tried to falsh tot with flashtools it refused to flash stating that i am using wrong file so i edited build pro from d855 to f400l then i entered download mode connected flash tools i did start flash just after laf.img i gives an error stating unable to flash partion some thing like that and stops my fone is permanently in download mode when i turn it on the pc does detect it so as LG support tools but the KDZ flasher never worked for me nor the lg support tools they do download the right file but just as starts to updates it says disconnected check cable( same issue occured when my fone was working properly i tried to flash on windows 8 and windows 7 mechines ) any ways flashtools only flash laf.img and gives error and KDZ flasher for some wired reason didnt flash my fone before. i am thinking if some how i could enter the fastboot mode then i would manually flash all the files included system.img the fone would boot but how to i enter fastboot. and why the kdz never worked for me doesnt it work on win 7 and win 8 or is it the drivers what should i do help really appriciated thanks what if when falsh tools start to flash laf.img i remove the cable so laf.img cannot get flashed would that allow me to enter fastboot or there is any software that would work in download mode and manually flash all the img files plz help me thanks
Click to expand...
Click to collapse
You can try this , It always works for me and this youtuber is great:
youtube.com/watch?v=1WgXuxDbmbc

satirg said:
so the issues goes like that i was using cloudy 2.2 rom my varient was g3f400l i accedently installed 855 version from twrp the fone stated in fastboot mode ....................................................................................................................................................................plz help me thanks
Click to expand...
Click to collapse
Hi there.
Sorry to hear you are having such problem.
Please check this thread out because the OP also flashed the wrong ROM on his phone but he found a solution to fix it http://forum.xda-developers.com/lg-g3/help/solution-flashed-wrong-model-rom-to-d852-t2987242
Let me know if this helped you please as I always feel sorry for people who brick their devices. Good luck.

[Debrick] How to recover the hard bricked phone?

Hello,
has anyone found a solution how to debrick the hard bricked FirePhone (64 GB)?
Currently the phone is recognized as QHSUSB_BULK -> Qualcomm HS-USB QDLoader 9008.
I tried the following tools for recovery:
ADB and FastBoot
- Cannot found device.
QFIL
QPST
- Which programmer can be used? (MPRG8974.mbn)
MiFlash
- Wrong programmer (error 0x8007000b).
BoardDiag
- How to prepare the partition.txt and extract the fw_image?
QBoot
- How to prepare the singleimage.bin?
QMSCT_DL_EMMC_TOOL
- Partitions are not recognized

Noone knows, Poke around and if you find anything, post here so we get to know too.

Little better situation for me ...
From TWRP Recovery, I restarted to system before flashing CM ROM and now I could not get to TWRP Recovery. Of course the phone is stuck at AMAZON logo while booting with no ROM installed. I could get into Fire's Recovery which is very constrained. I have just got access to ADB Sideload. Even when i tried to sideload the Fire OS Stock Rom, it failed at signature Verification. How do I toggle signature verification off when i give the command "adb sideload rom.zip" . Is anyone aware of any switch that I can append to toggle off the verification checking?? All Android Gurus out there... Kindly share your valuable suggestion... Thanks ..

manojvasanthram said:
Even when i tried to sideload the Fire OS Stock Rom, it failed at signature Verification. How do I toggle signature verification off when i give the command "adb sideload rom.zip"
Click to expand...
Click to collapse
The stock recovery doesn't support ZIP files, it's only for sideloading official BIN files released by Amazon.

Bingo Bronson said:
The stock recovery doesn't support ZIP files, it's only for sideloading official BIN files released by Amazon.
Click to expand...
Click to collapse
I did try the bin files. it threw up assert error for the device name "kodiak ,.. then i edited the relevant part of the script inside the bin file and rebuilt it and tried to side load, but the signature verification failed. Can you please let me know where can i get the signed versions of stock rom for Fire phone ?
Thanks

Any luck brother with this issue? We r on the same boat
BetaIQ said:
Hello,
has anyone found a solution how to debrick the hard bricked FirePhone (64 GB)?
Currently the phone is recognized as QHSUSB_BULK -> Qualcomm HS-USB QDLoader 9008.
I tried the following tools for recovery:
ADB and FastBoot
- Cannot found device.
QFIL
QPST
- Which programmer can be used? (MPRG8974.mbn)
MiFlash
- Wrong programmer (error 0x8007000b).
BoardDiag
- How to prepare the partition.txt and extract the fw_image?
QBoot
- How to prepare the singleimage.bin?
QMSCT_DL_EMMC_TOOL
- Partitions are not recognized
Click to expand...
Click to collapse
Ive read we need a system image of a running phone and flash it onto the bricked one to make it work, but I dont see any practical solution to this problem. I am a newbee, dont hae much knowledge. In experimenting, I have also deleted its eMMC paritions. Now, even the eMMC is not detected on the PC. Just connecting Qualcomm HS_USB QDLoad 9008 (Com4).

Secure Booting Error! Cause: boot certification verify

Good day mate. My brick phone is F460S variant. I got this error when I tried to go back to Lollipop using Lg flash tool 2014, it got stuck on 5% and remove usb cable and start again, after that I got this error Secure Booting Error! Cause: boot certification verify.
No download mode
No recovery
anyone can help me please?:crying:

anyone?

You have triggered the downgrade QFUSE. There is nothing you can do apart from trying to unbrick it like it was dead, but that's not guaranteed to work. You should have researched more before attempting this. My prototype doesn't have a QFUSE, so i am free to downgrade via TOT to kitkat or lollipop.

西村大一 said:
You have triggered the downgrade QFUSE. There is nothing you can do apart from trying to unbrick it like it was dead, but that's not guaranteed to work. You should have researched more before attempting this. My prototype doesn't have a QFUSE, so i am free to downgrade via TOT to kitkat or lollipop.
Click to expand...
Click to collapse
What does QFUSE mean?

anmino said:
What does QFUSE mean?
Click to expand...
Click to collapse
I second you on this. I just uninstalled MultiROM and got the secure booting error. Depending on the ROM you have, find a bumped kernel and flash it. Most of the kernels on XDA are pre-bumped unless the developer states so. Boot into recovery, tutorials on the internet, then flash the kernel and voila.

if you can use twrp or you're able to flash, use mr_bump.zip: https://mega.nz/#!DNwhRBrK!Ki6zIzXca0KjPShi6L2oaCYIr0CkmH8sEymEt-0Q3ys
oh sorry, I didn't see "no recovery".

HardStyl3r said:
if you can use twrp or you're able to flash, use mr_bump.zip: https://mega.nz/#!DNwhRBrK!Ki6zIzXca0KjPShi6L2oaCYIr0CkmH8sEymEt-0Q3ys
oh sorry, I didn't see "no recovery".
Click to expand...
Click to collapse
Yes, no DOWNLOAD mode and RECOVERY mode.. Anyone have an idea how to fix this?

anyone?

Hello, i got the same probleme and i've trying a lot of things but not resolved..
My phone is a LG G3 Beat F470s..
Please help us..

Dowblnload adb and fastboot drivers
Download laf.img for your device
Download LG Drivers
Get you G3 to fastboot mode. Hold volume up and connect it to PC
Open fastboot and adb folder in PC, ctrl+shift+right click and open cmd. Type fastboot devices...if ur device is listen then proceed, if not u did not do something cotrectly...if yes just flash laf img to your G3 and voila

I remember me that I was in the same situation:
No TWRP, no download mode, so i have use in pat this thread:
https://forum.xda-developers.com/showthread.php?t=1752270
And an other that i haven't found again (xda thread), in some lines:
=> download the last img file from: https://eu.dl.twrp.me/d855/
=> no download mode available so no possibility to flash manually twrp file from an LG Flash Tool
==> so setup an adb connexion to the phone, cp command to copy the img file on the sdcard or where you want
=> command: "flash recovery twrp-2.8.x.x-xxx.img" (https://www.xda-developers.com/how-to-install-twrp/
=> if it's as worked, you could reboot manually in twrp, make again the partitions if needed and flash any ROM.