Develop Bugs

G3 F400K that thinks it's a F400L

Hello,
Can someone please point me in the right direction on how to get my F400K that thinks it's a F400L back to F400K?
I tried a couple of the custom roms from the G3 Development forum, but now I want to flash back to stock firmware and the LG Firmware tool errors out and says that CrossDL F400L to F400K error.
Recovery screen shows KTV49L.F400L10A if it helps in anyway.
I just signed up so I'm not able to post this message on the custom rom /development thread.
Cheers,
Jeff

OZJeff said:
Hello,
Can someone please point me in the right direction on how to get my F400K that thinks it's a F400L back to F400K?
I tried a couple of the custom roms from the G3 Development forum, but now I want to flash back to stock firmware and the LG Firmware tool errors out and says that CrossDL F400L to F400K error.
Recovery screen shows KTV49L.F400L10A if it helps in anyway.
I just signed up so I'm not able to post this message on the custom rom /development thread.
Cheers,
Jeff
Click to expand...
Click to collapse
I'm in the same boat, but the other way round. My F400L comes with a F400K firmware and now I can't update it. I've tried flashing the stock firmware following the guide and also got an error saying wrong device model.

windwave said:
I'm in the same boat, but the other way round. My F400L comes with a F400K firmware and now I can't update it. I've tried flashing the stock firmware following the guide and also got an error saying wrong device model.
Click to expand...
Click to collapse
You need to you file explorer with root access and access system/build.prop change your model number in there to F400L and then then restore with the F400L firmware and DLL file using Flash Tool.

jms.flynn said:
You need to you file explorer with root access and access system/build.prop change your model number in there to F400L and then then restore with the F400L firmware and DLL file using Flash Tool.
Click to expand...
Click to collapse
I had a hunch that this was the case, do you know which exact setting that needs to be changed?
I see references to F400L on the following settings
ro.build.id
ro.build.version.incremental
ro.lge.factoryversion
ro.lge.swvesion
ro,product.model
ro.build.description
Cheers.

I've got the same issue as windwave, my F400L came with F400K firmware and I can't update. So did anyone find a way to get their phone back to the correct firmware and update successfully afterwards?

T.R.A.N.C.E. said:
I've got the same issue as windwave, my F400L came with F400K firmware and I can't update. So did anyone find a way to get their phone back to the correct firmware and update successfully afterwards?
Click to expand...
Click to collapse
I was able to use a modified F400K .dll from another thread here, from there I was able to restore to the latest 10g factory firmware and re-flashed it again with the stock .dll.

OZJeff said:
I was able to use a modified F400K .dll from another thread here, from there I was able to restore to the latest 10g factory firmware and re-flashed it again with the stock .dll.
Click to expand...
Click to collapse
Hello OZJeff! I need your help! I have the same problem with you. Which thread that I can download the modified F400K .dll? Thanks a lot!:crying:

bardochu said:
Hello OZJeff! I need your help! I have the same problem with you. Which thread that I can download the modified F400K .dll? Thanks a lot!:crying:
Click to expand...
Click to collapse
Hello... I got the link to download the modified F400K .dll from this thread:
http://forum.xda-developers.com/lg-g3/help/help-flash-f400k-to-d855-load-t2801028
Cheers.

OZJeff said:
Hello... I got the link to download the modified F400K .dll from this thread:
http://forum.xda-developers.com/lg-g3/help/help-flash-f400k-to-d855-load-t2801028
Cheers.
Click to expand...
Click to collapse
Oh! U are so nice! good egg!:victory: My G3 born again! Thank you so much!

Upgrade dl and board dl

Does anyone can explain for me when should i use board dl during an installation of a rom?
I am putting a stock rom on my LG G3 and i dont know the difference between those two options, and google was useless.
Thanks

Pedro Velloso said:
Does anyone can explain for me when should i use board dl during an installation of a rom?
I am putting a stock rom on my LG G3 and i dont know the difference between those two options, and google was useless.
Thanks
Click to expand...
Click to collapse
Are you flashing a KDZ or TOT? If KDZ you don't need to touch these files.

leomd333 said:
Are you flashing a KDZ or TOT? If KDZ you don't need to touch these files.
Click to expand...
Click to collapse
TOT file with a dll file

btw, if i download the kdz file it is just put it on program instead the tot?
Thanks

Pedro Velloso said:
btw, if i download the kdz file it is just put it on program instead the tot?
Thanks
Click to expand...
Click to collapse
Put your imei at the end of this link http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=
If it shows up your device information, go down to the SW part and click on the link and it should download the KDZ for your device. Then use the stock guide to flash it back to stock (takes 5 mins).

leomd333 said:
Put your imei at the end of this link
If it shows up your device information, go down to the SW part and click on the link and it should download the KDZ for your device. Then use the stock guide to flash it back to stock (takes 5 mins).
Click to expand...
Click to collapse
It showed only part of the info.
<esn>
<model>
<suffix>
<msn>
Nothing else
And according with all stamps and the imei the phone is F400L but on the settings of the device it is as F400K. Do you know if this is normal? I tried install the TOT of the F400L and it doesnt worked.
Thanks

Cannot downgrade from MM - Tried all options!

Hello all,
I have a LG G3 D855P Brazilian model.
I've updated my G3 to Marshmallow via the LG Flashtool 2014 using this method:
http://www.android.gs/manually-update-lg-g3-to-android-6-0-using-marshmallow-kdz-and-flash-tool/
I have also installed TWRP to root it in MM.
My phone is working fine, but I want to revert back to official KK or LL. The problem is that I am now unable to restore it back to factory. I have tried the following options:
1. Using the LG FlashTool v1.8.6.527 with LGD855AT-00-V10e-EUR-XX-JUL-08-2014-16G+0.tot and LGD855_20140526_LGFLASHv160.dll.
Doesn't work. The FlashTool complains the device model is wrong (should be D855 when it's actually D855P)
2. Using the LGUP tool. Doesn't work also. It gets stuck at the "Start TOT Download" part (9%) and it never finishes.
What are my options? As far as I know, the TOT file I've been trying to use is the correct one.
Thanks in advance!

Try to change the dil file.if you have kit Kat kdz file.extract dll from that.this method solved my problem .

Jahanzaibawan said:
Try to change the dil file.if you have kit Kat kdz file.extract dll from that.this method solved my problem .
Click to expand...
Click to collapse
Sorry, how do I exactly extract the dll from a kdz?

donatello88 said:
Sorry, how do I exactly extract the dll from a kdz?
Click to expand...
Click to collapse
Use kdz firmware extractor tool .
http://forum.xda-developers.com/showthread.php?t=2600575

What MM are you using now? So far as I know you can donwgrade from MM to LP, not KK, using the LGUP tool.
If I were you, I'd unroot or reflash the MM. Then downgrade to LP. Try to use KDZ files,

lgup problem

hi
i tried to downgrade but when i start lg up
this message show
unkown model , iam using FulmicsROM
any help please

LGUP works on stock firmware only.

Jahanzaibawan said:
LGUP works on stock firmware only.
Click to expand...
Click to collapse
ok so i should install a stock first like i install fulmic then
use lg up ??

Mo Ali said:
ok so i should install a stock first like i install fulmic then
use lg up ??
Click to expand...
Click to collapse
Yup. Use flashtool for tot.Or flash through twrp if you have custom recovery.

big problem

my brother flash my phone h81520g with a kdz h818 how can i change it back pls help :'(
i use kdz h81520g but LGUP say kds invalid

The first step is to admit it was you

help pls

darkvidouka said:
my brother flash my phone h81520g with a kdz h818 how can i change it back pls help :'(
i use kdz h81520g but LGUP say kds invalid
Click to expand...
Click to collapse
You must use a hex editor and change the h815 kdz to make it look like the h818 so you can flash it
Use the search to find the guide for this here on XDA
Sent from my OnePlus 6T using XDA Labs

i didn't find it can you give it to me with steps pls i m noob on that

https://www.photobox.co.uk/my/photo/full?photo_id=501725780524

I flashed a h818 LP rom and was able to clean flash straight to a h815 LP rim with FIsH no problem

Omg my phone don't work no logo just i see bleu led i can only use usb cable with sound+ to flash it
Helllllllp pls

https://youtu.be/Bpme4mpZp9k
The same in video

darkvidouka said:
The same in video
Click to expand...
Click to collapse
If a h815 won't work try a h818 LP kdz with lgup , remember to "refurbish"
Try to root it and install twrp-in-fish
I flashed camuix on my rooted h815t with fish and it screwed up but I was easily able to wipe it in fish and install genesys LP rom
*I take no responsibility for what you decide to do.*