[Tutorial] How to flash factory images with LG Flashtool

bitdomo

Senior Member
Nov 3, 2011
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Hi,

My phone's button stopped working just inside system.
In bootloader's menu and when force reset it works.

Tried to flash using LG Flashtool and nothing.
Anyone knows what may be?

Thanks
you tried and nothing is not much information to solve your problem.


Have you installed the drivers?
When you enter download mode do you see a bootlogo saying download and then after that another screen saying firmware update with a progress bar hanging at 0%?
Have you changed to port number to 41?
Have you reconnected your phone after lg flashtool says "READY!!" in the COM41 window?
Do you can any error message from lg flash tool?
Have you tried flash stock rom in the normal way with fastboot?
 

allsalvati

Senior Member
Nov 29, 2010
176
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Florianópolis
you tried and nothing is not much information to solve your problem.
Sorry, here what i have tried:
1 - I flashed a zip with stock rom
2 - I flashed stock images with flash script
3 - I formatted all partitions in CWM recovery
4 - I flashed stock Kit Kat image again
5 - I flashed Android L preview image
6 - I flashed with LG FlashTool

The phone booted fine everytime i flashed, but the physical buttons didn't worked.
I can reset the phone using button's combo, i can access the options in bootloader's menu, i just can't use the buttons inside the system.

Thanks
 

allsalvati

Senior Member
Nov 29, 2010
176
16
0
Florianópolis
I don't know exactly what happened, but now it's working.

After flash with LG FlashTool i turned off the phone for a while then i accessed the bootloader's menu to see if it's blocked.
When i started the phone the buttons worked as if nothing had happened.
 

harsh2193

Senior Member
Mar 7, 2013
320
85
0
Los Angeles
I'm not able to boot into download mode. I pressed the volume up button, held it down for a few secs (tried instantly as well) and then plugged in the usb cable, but the phone still boots up into the bootloader and the volume button press causes it to keep switching between the bootloader options.
 

wangdaning

Senior Member
Sep 17, 2012
1,358
563
133
Wuxi
Again a damn chinese site like that. invitation based + you have to pay for each file to download :(
You do have to sign up, but you don't have to pay. It is a credit based site, meaning you get what you give. It is not real money. The top part of the link is saying you can get 300 credits by sending them a qq message. BTW, I am not downloading it. Maybe if someone else does they will post a mirror.
 

Blessart

New member
Sep 27, 2014
1
0
0
Hi guys,

I did everything as posted in the begining of this thread and still when I start flashing I get this annoying error (see attched file)
does this mean my partition is completly corrupted because it always says "userdata erase fail"?
got the same problem with the Nexus Root Toolkit by the way where it says "flash write failure"
so this probaply means my Nexus 5 is really bricked right? I'm thankful for any advices.

greetings,

edit: I found another thread with the same problem > http://forum.xda-developers.com/google-nexus-5/help/nexus-5-flash-write-failure-t2693128
so it really seems like a hardware problem! only solution is to exchange the partition manually :(
 

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jd1639

Recognized Contributor
Sep 21, 2012
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Minnesota
Hi, Can you help me please.I have downloaded everything and set up the drivers as instructed but when I click on start Lg flash tool to start the process I get a message saying LG USB/Parallel lock key is not detected and then a login box pops up which has the country set as Republic of Korea in the first box and then it wants an ID and password entered. SOLVED
Does anyone know the solution to this? I'm having the same issue.

Sent from my Nexus 5 using XDA Free mobile app
 

bitdomo

Senior Member
Nov 3, 2011
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Followed directions to a T. Can't figure out what I'm doing wrong for the life of me.....
Your phone is in factory mode. You have to boot up a custom recovery then run these commands from your PC's CMD or terminal window:

adb shell

dd if=/dev/block/platform/msm_sdcc.1/by-name/misc of=/misc.img

exit

adb pull /misc.img ./
Then open misc.img in a hexeditor. Go to 8800 offset.
You will see a text something like this LGD820AT-00-V10b-NXS-XX-OCT-31-2013-KRT16M-FACTORY-16G+0
Make that text look like this LGD821AT-00-V10b-NXS-XX-OCT-31-2013-KRT16M-USER-16G+0 (I mean just replace the text from the "-" sign before the FACTORY word with the words of USER-16G+0 text)
Dont be bothered with the additional +0 at the end of the text.
Save your modifications.
Go back to CMD or treminal and type these commands:

adb push ./misc.img /

adb shell

dd if=/misc.img of=/dev/block/platform/msm_sdcc.1/by-name/misc
Then you should be good to go with LG flashtool. If you dont want to do this then use fastboot method to flash stock firmware.