Develop Bugs

Invalid sim card error after flashing E975 kdz

I successfully (??) flashed my F180k to E975K kdz/
everything seems ok, but I get Invalid sim error, and obviously cannot connect/
I tried to unlock the phone using freegee, running TWRP, with no success. should i run CWM 6.0.3.0?
Any other ideas why the phone is locked or how to unlock it?
thanks,

invalid sim got nothing to do with lock bootloader and recovery and freegee

the phone is permanently locked (!!) help...
Any ideas how to bypass it?

if it was working fine before try the same stock f180 firmware and see if that works, have no idea about sim unlocking on optimus G. search for that.

gilsh4321 said:
Any ideas how to bypass it?
Click to expand...
Click to collapse
you need to flash f180 baseband, 1st check your f180 S or K or L then flash baseband made for your variant

thanks, I will try
sunyakram said:
you need to flash f180 baseband, 1st check your f180 S or K or L then flash baseband made for your variant
Click to expand...
Click to collapse
BTW, I was following your (great) instructions. probably did something wrong while trying to flash the baseband. I will retry.

gilsh4321 said:
BTW, I was following your (great) instructions. probably did something wrong while trying to flash the baseband. I will retry.
Click to expand...
Click to collapse
sorry if i was wrong,but many people including me use the method and have no worry,the problem only came when we make a lil mistake,what your model? f180s/f180l/f180k?

I was convertiong LG F180k to E975
sunyakram said:
sorry if i was wrong,but many people including me use the method and have no worry,the problem only came when we make a lil mistake,what your model? f180s/f180l/f180k?
Click to expand...
Click to collapse
your guide is really great, I probably did something wrong. how can I tell if I am running the right baseband?
the baseband currently installed on my phone is APQ8064/MDM9x15M.
do you have another baseban file other than what you've linked to on your guide?
many thanks!

gilsh4321 said:
your guide is really great, I probably did something wrong. how can I tell if I am running the right baseband?
the baseband currently installed on my phone is APQ8064/MDM9x15M.
do you have another baseban file other than what you've linked to on your guide?
many thanks!
Click to expand...
Click to collapse
i dsnt post any guide on here or any where,okay?
here are the links
f180s
f180k
f180l

I flashed the baseband, but it is still permanently locked.
Any ideas as to how can it be unlocked? maybe if I will use other EFS backup?
will it be solved if I will go back to to the original KDZ?

gilsh4321 said:
Any ideas as to how can it be unlocked? maybe if I will use other EFS backup?
will it be solved if I will go back to to the original KDZ?
Click to expand...
Click to collapse
have you backed up your efs before installing kdz? it may help you for working sim cards.
but if you revert back to orignal kdz baseband is a issue here again

Did u hard reset after flashing kdz???
Sent from my Optimus G using Tapatalk

I have the same problem
atifsh said:
if it was working fine before try the same stock f180 firmware and see if that works, have no idea about sim unlocking on optimus G. search for that.
Click to expand...
Click to collapse
I have the same problem and when I turn it back to stock F180K firmware it recognizes any sim very well
---------- Post added at 12:04 PM ---------- Previous post was at 11:57 AM ----------
sunyakram said:
you need to flash f180 baseband, 1st check your f180 S or K or L then flash baseband made for your variant
Click to expand...
Click to collapse
This did not solve the problem.
The baseband fix seems to only fix the reception issues of the phone so that it can pick up the signal.
The problem I have is about the phone not recognizing the sim card. It will only recognize it when I go back to the stock F180K rom not the E975 rom.
By the way, all F180 phones are pre-unlocked by Korean law.

jung901 said:
I have the same problem and when I turn it back to stock F180K firmware it recognizes any sim very well
---------- Post added at 12:04 PM ---------- Previous post was at 11:57 AM ----------
This did not solve the problem.
The baseband fix seems to only fix the reception issues of the phone so that it can pick up the signal.
The problem I have is about the phone not recognizing the sim card. It will only recognize it when I go back to the stock F180K rom not the E975 rom.
By the way, all F180 phones are pre-unlocked by Korean law.
Click to expand...
Click to collapse
can you please help me?
even if i go back to stock f180k, i still can't get a signal
is it my sim?
i already flash the baseband but still no use

call me
coldmalice said:
can you please help me?
even if i go back to stock f180k, i still can't get a signal
is it my sim?
i already flash the baseband but still no use
Click to expand...
Click to collapse
You do not need to touch the baseband if you already flashed the F180K rom.
The sim should be recognized and baseband should be the right one already.
If you need further info add jseo to kakao talk and send me a message and we can talk real time. I'm in Seoul

jung901 said:
You do not need to touch the baseband if you already flashed the F180K rom.
The sim should be recognized and baseband should be the right one already.
If you need further info add jseo to kakao talk and send me a message and we can talk real time. I'm in Seoul
Click to expand...
Click to collapse
Can you please tell me what to do?

Invalid sim card after converting E975
neaznc021 said:
Can you please tell me what to do?
Click to expand...
Click to collapse
Hi Guys,
I need expert help here , it looks i brick my handset while i was trying to convert it into E975 by following the instruction
Guide
Regardless of which firmware you are currently running on your F180, you will need to download and switch to the corresponding one from the list below:
F180S : F180S20B_00.kdz
F180K : F180K20B_00.kdz
F180L : F180L20H_00.kdz
Tip: You can find your phone’s model by going to ‘Settings > About > Phone identity’ in Android.
Warning: Make sure your phone’s battery is at least charged 80%. Don’t proceed otherwise as LG Optimus G comes with non-removable battery and thus you won’t be able to easily swap the battery if it dies in the middle of the process.
It is mandatory that you factory reset your phone before proceeding. For doing so, go to ‘Settings > Privacy > Factory data reset’. Please keep in mind that doing so will wipe your phone including contacts, messages, mails, applications and all the data on your phone’s internal storage. Your phone will reboot twice. Let it boot after factory reset. Once you are on the language selection screen, power off your phone
Press and hold down ‘Volume Up’ + ‘Volume Down’ and while inserting USB cable in to the phone. This will get you to S/W download mode on LG F180.
Now you need to flash the firmware you downloaded earlier. Please refer to the guide here:
How to: Download and Install KDZ LG firmware – All Android models
Once the KDZ firmware is successfully flashed, your phone will reboot automatically. Once it fully boots up, go through the setup procedure and again factory reset it as you already did once.
Once you are on the language selection screen, power off your phone
Once again, put your phone in download mode
For converting your phone to E975, we’ll be flashing this E975 Hong Kong KDZ:
Follow the same procedure for flashing KDZ as you did earlier.
Once the KDZ flash is successful, go through the set-up procedure. Now go to ‘Settings > Storage’ and make sure your internal storage is being listed there. If it shows “0.00 GB” there, don’t panic. Power off your phone. Once completely off, press and hold down ‘Volume Down’ + ‘Power’ buttons until the phone displays a hard reset screen. Release ‘Volume Down’ and press ‘Power’ twice for resetting your phone.
Your phone will reboot once again and your phone’s internal storage will be back to normal.
Now you need to root your phone. Please refer to our LG Optimus G universal rooting guide here:
Universal root for LG Optimus G – Any firmware
Once you are done with rooting process, make sure you reboot your phone at least once if it doesn’t reboot automatically.
Now we will be flashing LG F180 baseband. Download your corresponding baseband backup from the list below:
F180S Baseband
F180K Baseband
F180L Baseband
Unzip the downloaded archive and you will find a batch file named ‘modem-flash’ inside it. Make sure ‘USB Debugging’ is enabled on your phone and your phone is in ‘Charge only’ mode while connected to the PC. Run the ‘modem-flash’ batch file.
Keep an eye on your phone screen as you will need to tap the grant permission button on SuperSU pop-up. If you miss the pop-up as it expires after 10 sec, run ‘modem-flash’ batch file again.
Once the baseband has been flashed successfully, reboot your phone
Congratulations! You have just converted LG F180 to LG E975.
it converted successfully but when i insert sim in it says invalid sim card , i have updated the base band given in above link but no luck then i tried to flash the original rom with many version for this set same thing again ,no signal no network .i think i mess up with the orginal modem without taking any kind of backup.
I need expert advise here how to fix it and which kdz to use to fix it.
looking forward for your reply.
Thanks,

@ranadawood: Flash original kdz file for your respective model to get back network ...
e.g F180L/k or S one

umair928 said:
@ranadawood: Flash original kdz file for your respective model to get back network ...
e.g F180L/k or S one
Click to expand...
Click to collapse
I already tried but no luck i tried F180K20O but no luck ,trying F180K30b_00 giving me extract erro.
Please let me know which could be the original rom for my phone and?
Thanks

ranadawood said:
I already tried but no luck i tried F180K20O but no luck ,trying F180K30b_00 giving me extract erro.
Please let me know which could be the original rom for my phone and?
Thanks
Click to expand...
Click to collapse
Follow this guide, This has also many fix included...
http://forum.xda-developers.com/showthread.php?t=2625044
and if none of above work for you than try to flash kdz with cdma mode rather than 3gqt and start kdz flashing by selecting CSE web upgrade test

LG H815P FiX Can't find matched cust for NT-code mmc/mnc[], subset[]

Note : Do it at your own risk , i am not responsible to any damage you do to your device!!!!
with that being said let's cut to the chase
long story short i got a G4 H815p from South Africa about 3 days ago , it was running on lollipop and i decided to update it to Marshmallow , after reading few thread here on XDA i decided to flash a H815 KDZ seeing people in said thread said it was fine to do so ( and there was/isn't any Marshmallow kdz from South Africa ). I used LGUP and updated to marshmallow and once the device booted and was greeted with the error message Error current version is not available for user can't find matched cust for NT code .
At this point i must admit i was a little bit annoyed and i tried to find a way to get rid of that error message and unfortunately it looked like rooting ( which is not possible on the H815p cos of the lock bootloader) the device and deleting/editing the cust.prop file or finding a kdz that matched my regions were the only way out of my predicament. At that point i remembered facing the same issue some times back when i was using a G2 so with the help of XDA and Google i came up with a fix e for my Device but this Should also work on other H815p​
Before you proceed you check out this thread . it has info about LG G3 NT CODE and seems the G3 Code are about the same as the G4 ones
THE NT CODE YOU ARE GOING TO APPLY MUST MATCH YOUR KDZ REGION !!!!​
HTML:
http://forum.xda-developers.com/lg-g3/general/how-to-change-region-t2904951
step one
Know which region your Marshmallow kdz that you flashed is from ( in my case it is the Europe H81520C_00_1218.kdz , got it from http://storagecow.eu/index.php?dir=Xda/LG+G4/H815/Marshmallow+6.0/
step two
Enter LG G4 hidden menu using the correct code for your device . My device the code on marshmallow is *#546368#*815#*, i believe it is the same for all H815P got it from here http://forum.xda-developers.com/showpost.php?p=64142393&postcount=79
step 3
Apply code
enter hidden menu
navigate to SVC menu
Navigate to Version info
Navigate to NT Code , Make a backup of your current code and save it on your sd card just in case ( a screen shot will suffice ) and apply the code from you region , close then reboot your device and voila
Pictures s attached to the post to illustrate what was my NT Code before the fix and what it is after now after the fix​I tested the phone for 24 hours after applying the fix and everything work as it should , no network issues , calls, sms ,mms. wifi , bluetooth,Gps all work as they should
thanks to @YaDr , @JeremyChen

UP

Nice find
touns_j said:
UP
Click to expand...
Click to collapse
thanks i'm gonna use this one day. i reverted to LP after that annoying message and no root on MM. safe to say i will not buy a LG phone again as this locked bootloader crap has got me annoyed too.

anyone else tried this methond?

NTCODE WRITE ERROR - every time

Hi, NT WRITE CODE to me too, every time (rooted LG G4 815P). Any help? Thanks!

karoltom said:
NTCODE WRITE ERROR - every time
Click to expand...
Click to collapse
which device and firmware have you tried this on? i did this on my South African G4 H815P with the 20C European KDZ and till now i haven't encountered any issue ( i even went from the 20c kdz to the 20d kdz using LGUP and didn't have to do the whole process again)
vffzbr said:
Hi, NT WRITE CODE to me too, every time (rooted LG G4 815P). Any help? Thanks!
Click to expand...
Click to collapse
rooted G4 H815P ??? you don't need this process if you're rooted.. go to root folder , delete cust folder, reboot devices.

touns_j said:
which device and firmware have you tried this on? i did this on my South African G4 H815P with the 20C European KDZ and till now i haven't encountered any issue ( i even went from the 20c kdz to the 20d kdz using LGUP and didn't have to do the whole process again)
rooted G4 H815P ??? you don't need this process if you're rooted.. go to root folder , delete cust folder, reboot devices.
Click to expand...
Click to collapse
I did it also..just delete the cust folder. But if you choose like Genisys Rom you dont have that problem..

Many thanks. This method works for me. I've changed nt code from Poland P4 network provider to open Europe. Flashed V20D Firmware and everything works flawlessly .
Wysłane z mojego LG-H815 przy użyciu Tapatalka

I've managed to fix it with Root. No NT Code error and no carrier apps - http://forum.xda-developers.com/showpost.php?p=66957161&postcount=4

touns_j said:
which device and firmware have you tried this on? i did this on my South African G4 H815P with the 20C European KDZ and till now i haven't encountered any issue ( i even went from the 20c kdz to the 20d kdz using LGUP and didn't have to do the whole process again)
rooted G4 H815P ??? you don't need this process if you're rooted.. go to root folder , delete cust folder, reboot devices.
Click to expand...
Click to collapse
Thank you very much! Yes, I have a LG G4 (815P) rooted device, and after delete the cust folder, everything looks great now. My best regards :good:

Hi guys
Im quite new at this. But have flush a few phones in my time. 1st time to do a LG. I got a LG G4 H815tr. Want to change it to H815p. Reason is that most apps is in Turkey language. May i ask for afvise on this and how to change it. Many thanks guys

SN4K13 said:
Hi guys
Im quite new at this. But have flush a few phones in my time. 1st time to do a LG. I got a LG G4 H815tr. Want to change it to H815p. Reason is that most apps is in Turkey language. May i ask for afvise on this and how to change it. Many thanks guys
Click to expand...
Click to collapse
there's no way of "changing your H815tr into a H815p
' , what you can do it manually flash an unbranded H815

SN4K13 said:
Hi guys
Im quite new at this. But have flush a few phones in my time. 1st time to do a LG. I got a LG G4 H815tr. Want to change it to H815p. Reason is that most apps is in Turkey language. May i ask for afvise on this and how to change it. Many thanks guys
Click to expand...
Click to collapse
there's no way of "changing your H815tr into a H815p, what you can do it manually flash an unbranded H815 on your device using like the newly released 20h uk firmware here http://forum.xda-developers.com/g4/general/kdz-firmware-v20h-united-kingdom-2016-t3396480

help !
Region code that I can change for Global-ESA ? thank !

i have the same model Lg g4 H815p
h81510P_00 installed on it but when i upgrade it to MM
it shows the error even i can use my touch so i reset it and now i am stuck on the device setup after reset with the warning.
This is my current version installed on it H81520G_00
plese help me

Worked flawlessly on v29a H815, Applied NT code through hidden menu and "NT Code Write OK" Restated and voila..
Thanks.

I changed following in hidden menu NT Code, changed as below NT Codes with respect to firmware region... Rebooted after confirmation "NT Code Write OK" message.
V29a Firmware NT Code:
"1","FFF,FFF,FFFFFFFF,FFFFFFFF,11"
V20h Firmware NT Code:
"1","FFF,FFF,FFFFFFFF,FFFFFFFF,51"
Checked in both above firmwares..Worked flawlessly on my h818p...No more annoying message on every boot.
Software Version in about/ settings also changed to region exp. 20h-DS2-XX to 20h-ESA-XX upon reboot.
Is DS2 appears when cust mismatch...?

shahper1 said:
I changed following in hidden menu NT Code, changed as below NT Codes with respect to firmware region... Rebooted after confirmation "NT Code Write OK" message.
V29a Firmware NT Code:
"1","FFF,FFF,FFFFFFFF,FFFFFFFF,11"
V20h Firmware NT Code:
"1","FFF,FFF,FFFFFFFF,FFFFFFFF,51"
Checked in both above firmwares..Worked flawlessly on my h818p...No more annoying message on every boot.
Software Version in about/ settings also changed to region exp. 20h-DS2-XX to 20h-ESA-XX upon reboot.
Is DS2 appears when cust mismatch...?
Click to expand...
Click to collapse
How you could did it?
When I try to change NTCODE in Service Menu, I always get "NTCODE WRITE ERROR" message. Is your bootloader unlocked?

Whats the firmware ver. you are trying this on..?

LG G3 stuck on firmware update screen

Hi
I have LG G3 D855 on android 4.4.2 and tried to update it to android 6 but I got a message saying "the device is not registered yet" so I tried to update manually by LGup but it always stuck on 6% and an error message appears I dont remember it but I think it was saying that there is a problem in the partition: cust
Then I tried with LG flash tool 2014 and it stuck on 2% and says "remove the battery and try again" but to no avail
Then tried to unbrick/unroot it by LG flash tool_v1.8 using tot firmware and it stuck on 6% again and shows an error message saying " partition change Fa..." (it's cut off, but I'm assuming that last word is 'fail')
So help me please because I can't use my phone anymore :crying:
How can I flash it now ?

saif_aldeen said:
Hi
I have LG G3 D855 on android 4.4.2 and tried to update it to android 6 but I got a message saying "the device is not registered yet" so I tried to update manually by LGup but it always stuck on 6% and an error message appears I dont remember it but I think it was saying that there is a problem in the partition: cust
Then I tried with LG flash tool 2014 and it stuck on 2% and says "remove the battery and try again" but to no avail
Then tried to unbrick/unroot it by LG flash tool_v1.8 using tot firmware and it stuck on 6% again and shows an error message saying " partition change Fa..." (it's cut off, but I'm assuming that last word is 'fail')
So help me please because I can't use my phone anymore :crying:
How can I flash it now ?
Click to expand...
Click to collapse
At first try to flash lolipop kdz with lg flash tool than flash 6 with lg up
---------- Post added at 09:05 PM ---------- Previous post was at 09:04 PM ----------
Also make sure you have lg d855 not ls990

Anik49 said:
At first try to flash lolipop kdz with lg flash tool than flash 6 with lg up
---------- Post added at 09:05 PM ---------- Previous post was at 09:04 PM ----------
Also make sure you have lg d855 not ls990
Click to expand...
Click to collapse
Thank you so much for your help
And unfortunately I tried to flash lollipop using LG flash tool 2014 but it stuck on 2% too and tried over again but to no avail

saif_aldeen said:
Thank you so much for your help
And unfortunately I tried to flash lollipop using LG flash tool 2014 but it stuck on 2% too and tried over again but to no avail
Click to expand...
Click to collapse
hi, what Os are you using?
did you install all the drivers?
have you tried different usb ports?
generic or genuine usb cable?

twisted_twice said:
hi, what Os are you using?
did you install all the drivers?
have you tried different usb ports?
generic or genuine usb cable?
Click to expand...
Click to collapse
Usually lg flashtool shows error just ignore it your phone will flash. But if you said it stuck then please check the driver. Also you saw in the phone screen it"s working or not.
---------- Post added at 12:46 AM ---------- Previous post was at 12:45 AM ----------
He said he use 4.4..2

Anik49 said:
Usually lg flashtool shows error just ignore it your phone will flash. But if you said it stuck then please check the driver. Also you saw in the phone screen it"s working or not.
---------- Post added at 12:46 AM ---------- Previous post was at 12:45 AM ----------
He said he use 4.4..2
Click to expand...
Click to collapse
I meant what Windows was he using. ( 7,8, or 10 )

Thank you so much for your help
I went to a service centre and they tried to fix it but in the next day they said that they couldn't flash it
So I tried again using LG flash tool and something weird happened the flash tool said that my model is d851 !
I don't know how but I flashed tot files for D851 and it worked again!
I don't know what they did and how they changed the model but it is working
So thank you so much guys for all your help
A little question : what's the difference between D855 and D851 ?
And I heard that there are locked and unlocked phones so how can I know if my mobile locked or not?

saif_aldeen said:
Thank you so much for your help
I went to a service centre and they tried to fix it but in the next day they said that they couldn't flash it
So I tried again using LG flash tool and something weird happened the flash tool said that my model is d851 !
I don't know how but I flashed tot files for D851 and it worked again!
I don't know what they did and how they changed the model but it is working
So thank you so much guys for all your help
A little question : what's the difference between D855 and D851 ?
And I heard that there are locked and unlocked phones so how can I know if my mobile locked or not?
Click to expand...
Click to collapse
855 : international version. 851: T-Mobile U.S.A version.
to know if your phone is unlocked insert different different sim cards. If they are accepted the phone is unlocked, otherwise it is locked to a specific carrier.

twisted_twice said:
855 : international version. 851: T-Mobile U.S.A version.
to know if your phone is unlocked insert different different sim cards. If they are accepted the phone is unlocked, otherwise it is locked to a specific carrier.
Click to expand...
Click to collapse
OK , thank you so much for your help

Sorry for jumping this old thread.
I have the exact issue. Tried to upgrade brand new D855 32GB from Kitkat to marshmallow using LGUP, device has been rebooted to download mode / firmware update. LGUP fails with an error that it cannot find partition : cust. Google was not very helpful about this error.
Tried multiple times without any help.
Also tried to flash TOT using LgFlashTool, and getting the same error about the cust partition. Note that in all retries, on the phone screen, while trying to flash, there progress never passed 0%
Tried hard reset but it doesn't help. Device is now always being booted into firmware update screen.
Appreciate your help, there is nothing more frustrating than getting a new device and brick it on the same day.

Install t-mobile rom onto h812 possible?

I have a lg g4 h812 and its unlock and on T-mobile now. Since it looks like the h811 and h812 have same hardware could I flash h811 firmware onto my h812?

you could always try to flash the first revision of the 811 firmware that is below 10H, i've tried on mine and got me into HardBrick. Got repaired for free.

xavierlangevin1 said:
you could always try to flash the first revision of the 811 firmware that is below 10H, i've tried on mine and got me into HardBrick. Got repaired for free.
Click to expand...
Click to collapse
What version did you flash that caused the hardbrick?

From my understanding you should never cross flash models. Some g4 varients could be differ. But rule of thumb never do it unless confirmed to work

I've successfully flash a 815 & 818 into my 812, but we have to reflash the modem file of the 812 original firmware to be able to obtain network (wifi work but quite laggy).
The 81110H is the firmware that i've tried to install (Phone wont reboot after upgrade and show off like 9008 device) . i don't know if we could modify a kdz for being able to inject directly the modem of the 812 into 815 rom...

Yes you can
I've made this tutorial but you have to change some thinks to use in your variant
PS: you will get some problems with your modem (dont work)
If you found how to get working
Please share
http://forum.xda-developers.com/att-g4/general/how-to-install-cyanogenmod-h810-t3388019

Wjbr1993 said:
Yes you can
I've made this tutorial but you have to change some thinks to use in your variant
PS: you will get some problems with your modem (dont work)
If you found how to get working
Please share
http://forum.xda-developers.com/att-g4/general/how-to-install-cyanogenmod-h810-t3388019
Click to expand...
Click to collapse
Which variant your using ? i wanna test to install the system.img partition into anyother variant that cannot be officially unlocked and try it. *i've get access to g4 812 bootloader with flashing a 815 firmware but can't unlock it...

xavierlangevin1 said:
Which variant your using ? i wanna test to install the system.img partition into anyother variant that cannot be officially unlocked and try it. *i've get access to g4 812 bootloader with flashing a 815 firmware but can't unlock it...
Click to expand...
Click to collapse
Im using a H810 (AT&T) variant
I install a H811 kdz on it
It works perfect but i cant get signal
And yes i can unlock the bootloader with this kdz (H811)

So you tried it ? to unlock ?

Wjbr1993 said:
Yes you can
I've made this tutorial but you have to change some thinks to use in your variant
PS: you will get some problems with your modem (dont work)
If you found how to get working
Please share
http://forum.xda-developers.com/att-g4/general/how-to-install-cyanogenmod-h810-t3388019
Click to expand...
Click to collapse
Can someone could try this with a 815, or any other model than 810 ?
---------- Post added at 06:36 PM ---------- Previous post was at 06:08 PM ----------
iljalways said:
I have a lg g4 h812 and its unlock and on T-mobile now. Since it looks like the h811 and h812 have same hardware could I flash h811 firmware onto my h812?
Click to expand...
Click to collapse
You could try the method of this guy but i can't tell if you will get a hardbrick...

xavierlangevin1 said:
Can someone could try this with a 815, or any other model than 810 ?
---------- Post added at 06:36 PM ---------- Previous post was at 06:08 PM ----------
You could try the method of this guy but i can't tell if you will get a hardbrick...
Click to expand...
Click to collapse
Here it is
I based my tutorial in another one
http://forum.xda-developers.com/g4/general/lg-g4-f500l-restore-signal-flash-815-t3214574

i've seen it before but flashing the 811 kdz give me a hardbrick. If i flash 810 then 811 that could work but cannot try it right now.

xavierlangevin1 said:
i've seen it before but flashing the 811 kdz give me a hardbrick. If i flash 810 then 811 that could work but cannot try it right now.
Click to expand...
Click to collapse
DONT flash a 810 kdz
Just use some steps from my tutorial but using files for your variant

Wjbr1993 said:
DONT flash a 810 kdz
Just use some steps from my tutorial but using files for your variant
Click to expand...
Click to collapse
With the 812 we can't directly flash a 811, without causing a hardbrick. I was only wondering if i could flash a 810 successfully a 811 wont be a problem

xavierlangevin1 said:
With the 812 we can't directly flash a 811, without causing a hardbrick. I was only wondering if i could flash a 810 successfully a 811 wont be a problem
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Aaah
Yes you can
But you have to flash first with lg flash tool 2014 (flash others kdz without problem)
And then with LG UP

xavierlangevin1 said:
I've successfully flash a 815 & 818 into my 812, but we have to reflash the modem file of the 812 original firmware to be able to obtain network (wifi work but quite laggy).
The 81110H is the firmware that i've tried to install (Phone wont reboot after upgrade and show off like 9008 device) . i don't know if we could modify a kdz for being able to inject directly the modem of the 812 into 815 rom...
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Hello friend,
I am also thinking of flashing H815(international) rom onto my H812(Canadian) hardware. If you don't mind, could you please tell me how did the phone function with the H815 firmware?
Thank you very much. Your help is greatly appreciated.

BIG_BADASS said:
Hello friend,
I am also thinking of flashing H815(international) rom onto my H812(Canadian) hardware. If you don't mind, could you please tell me how did the phone function with the H815 firmware?
Thank you very much. Your help is greatly appreciated.
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you cannot use it for daily usage, the mobile network doesn't work and the phone will randomly reboot sometimes.

xavierlangevin1 said:
you cannot use it for daily usage, the mobile network doesn't work and the phone will randomly reboot sometimes.
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Ok thanks, I'm asking because I'm going on a long trip to UK and the Middle East for 6 or 7 months , and thought flashing the H815 firmware would make it compatible with those networks and therefore a free solution, rather than paying to have it unlocked.
Thanks

xavierlangevin1 said:
you cannot use it for daily usage, the mobile network doesn't work and the phone will randomly reboot sometimes.
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So by default, H812 has a locked bootloader. But despite this, the flashing of H815 firmware still worked?

If you read carefully all posts in most of the cited "how-to's" ...
If you read carefully all posts in most of the cited "how-to's" that have been linked in the responses you've gotten to date ... you will note that many problems are encountered, ranging anywhere from hard bricks down. Simply not worth the risk, IMO as there is not a high enough probability that you can get back to what you had originally that was working in the first place.
S.

LG G3 soft bricked!! flashed wrong firmware

Heloo everone i am from INDIA
recently i purchased and refurbished lg lg3 within setting i could se it was D855 but on body it was D850
so i thoguhts its D855 because software it was running was D855 but then i flashed D855 firmware to update it and it is soft bricked i direct goes to download mode and nothing works
I took it to a shop he tried sevelar firmware at once i got it boot up but no camera wifi no modem, so it was not the correct one,
So is thier a way i can get it working?
How could i figure it is sprint at&t or verzion??? because it was an cdma set,
Cm13 or stock rom anything could work for me
Anyone please give me a procedure will b thankful to U.... :crying:

I you are able to access download mode, try and flash the latest marshmallow KDZ for D855. My device also has D850 on the back but it has the D855 software.

youssefkr said:
I you are able to access download mode, try and flash the latest marshmallow KDZ for D855. My device also has D850 on the back but it has the D855 software.
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an you give me the link u have flashed on your device n tool n procedure you sued to flash it??
will b thank full 2 u

happy3777 said:
an you give me the link u have flashed on your device n tool n procedure you sued to flash it??
will b thank full 2 u
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First open up your phone,exact model will be on the board.then flash accordingly software.

Jahanzaibawan said:
First open up your phone,exact model will be on the board.then flash accordingly software.
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I know already tried But it was D855 already tried n that caused soft bricking....