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how to revert back to Official rom

i am using wind p999 and using hell fire 7.2 now i want to revert back to froyo that came with the phone is this possible ? if yes then how ?
pardon me i have searched the forum couldnt find anything relvent And am a noob

http://forum.xda-developers.com/showthread.php?t=1048274 not sure if this would help you. but try searching through the development thread or google works great too.

Wind Mobile? T-Mobile?

Wind mobile

xtremists said:
i am using wind p999 and using hell fire 7.2 now i want to revert back to froyo that came with the phone is this possible ? if yes then how ?
pardon me i have searched the forum couldnt find anything relvent And am a noob
Click to expand...
Click to collapse
If you didn't change the phone's baseband, you can do a restore with CWM but the restore must use a backup of your phone's original ROM and kernel (If you don't have it, ask around for it on XDA) or you can reinstall the firmware, baseband, and software with a KDZ file and the offline updater.
If you changed the phone's baseband by updating the phone yourself (not updating through LG or your service provider), you have to reinstall the original firmware, baseband, and software with a KDZ file for your phone's service provider or the generic KDZ file if your phone did not come "branded" by your service provider which you can determine by what appears when you startup your phone.
Here's where there's information about installing a KDZ file.
http://forum.xda-developers.com/showthread.php?t=1610597
Don't use the KDZ file available there because it isn't Froyo. You'll have to get the Froyo KDZ file for your phone from somewhere else.
---------- Post added at 11:19 AM ---------- Previous post was at 11:15 AM ----------
Here's the Canadian version of WIND branded Froyo
http://forum.xda-developers.com/showthread.php?t=1594396

Need V21E KDZ Quick!

Hello all,
since every link is down. can someone upload this kdz for me?
i just sold the phone and he wants it on stock. but i cant find any kdz any more.
i did flash with smartflsh but that gives me the as always baseband problems.
Greetings Paul

check your host-file....
http://csmg.lgmobile.com:9002/swdata/WDLSW/LGP920/ADEUML/V21e_00/V21E_00.kdz

[Q] H955 Rom on F510L

Hi guys,
So here is my question, I got a LG G Flex 2 F510L from south Korea. And I wanted to know if it would be possible to switch the ROM for the H955 (which is the version currently sell in France) (because yeah I'm french ) since they got basically the same hardware...
And I don't want to test it myself because there is no custom recovery yet if I make a mistake etc... So, what do you guys think of my idea ?

It would work flashing it onto your phone, it would perform just like any other android smart phone, presuming they have the same specs. For example, if you flashed one of the h955's that only have 16gb's of memory, it would show in your storage that you only have 8 gb's or so remaining due to the system taking up 23 (in actuality it only uses 9, but it thinks it only has 16.) HOWEVER, even though it would perform just like an android smart phone, it would act like one, but without being capable of using your sim card, until you went back to stock. From what I understand, unless the phone, like the rom you flash, is unlocked, then your phone carrier won't be able to be used on that rom, as it's french, and not south korean. I would say try it, after you get the stock rom to re-flash yours if anything occurs. Don't be stuck like me, waiting for the h950 rom to appear, so I can fix my phone from being incapable of making calls. :crying::crying::crying:
Good luck!

So from what I understand, you tried it but your phone wasn't unlocked ?
Mine is free SIM so it should works... Unfortunately I couldn't find stock ROM for the F510L :crying:

I'm under the impression that even if it's unlocked prior to the flash, it would require another. I can't confirm nor deny this, but I would just wait until your specified stock is released on here.

Alright, I've found this but not sure if this is the entire ROM since it's named "system" and that's not a .kdz or even a .tot
I'll try to unzip it to see what it is exactly, and if it's my ROM, then I'll test the H955 ROM and let you know

So obviously it was just the "system" partition extracted and not the file dump that I need

Well, good effort at least. Eventually, you'll get your hands on it! Good luck.

Thx you sir, hope you'll find yours too

that's a good idea
Drissouille said:
Hi guys,
So here is my question, I got a LG G Flex 2 F510L from south Korea. And I wanted to know if it would be possible to switch the ROM for the H955 (which is the version currently sell in France) (because yeah I'm french ) since they got basically the same hardware...
And I don't want to test it myself because there is no custom recovery yet if I make a mistake etc... So, what do you guys think of my idea ?
Click to expand...
Click to collapse
I have taken your idea and now I have a brick:good:

ngheokieumy said:
I have taken your idea and now I have a brick:good:
Click to expand...
Click to collapse
Ouch Why did you do that without any possibilities to do a Nandroid backup ? :/

Drissouille said:
Ouch Why did you do that without any possibilities to do a Nandroid backup ? :/
Click to expand...
Click to collapse
backup by faith ???

ngheokieumy said:
backup by faith ???
Click to expand...
Click to collapse
You don't get it...
I said that we couldn't do a backup since my first post, so why did you do that ?
Not my fault if you bricked your phone, even if I'm truly sorry for you :/

Drissouille said:
You don't get it...
I said that we couldn't do a backup since my first post, so why did you do that ?
Not my fault if you bricked your phone, even if I'm truly sorry for you :/
Click to expand...
Click to collapse
My brick was revived when I up firmware H959 of Taiwan :laugh::victory:

Bravo !
From the original F510L rom, can you see any differences ? Improvements ?
I'm just wondering if it's worth it since my phone isn't bricked at all but still a little laggy sometimes

Drissouille said:
Bravo !
From the original F510L rom, can you see any differences ? Improvements ?
I'm just wondering if it's worth it since my phone isn't bricked at all but still a little laggy sometimes
Click to expand...
Click to collapse
Can you point me to a guide used to flash?

hbcdfpq said:
Can you point me to a guide used to flash?
Click to expand...
Click to collapse
You can follow this tutorial even if it's for the g3 it should work the same

Thanks. I was able to update to the H959 10D
However I now get the message 'CURRENT VERSION IS NOT AVAILABLE FOR USER' every time I boot. Doesn't seem to affect anything though. Does anyone have any idea what this means?
Surprisingly though even though this rom has no bloatware to me it's slower than the Rom I had previously (I had an f510S branded to SK TELECOM)
With my previous rom It would only disable cores 4, 7 when things heat up.. but with this firmware it also disables 5+6 as well.
If someone uploads a KDZ for the Korean model i'd probably go back... It seems that LG releases updates for the Korean model first as I was on 10i and could have updated to 15B while everyone else is on 10D and 10e.

hbcdfpq said:
Thanks. I was able to update to the H959 10D
However I now get the message 'CURRENT VERSION IS NOT AVAILABLE FOR USER' every time I boot. Doesn't seem to affect anything though. Does anyone have any idea what this means?
Surprisingly though even though this rom has no bloatware to me it's slower than the Rom I had previously (I had an f510S branded to SK TELECOM)
With my previous rom It would only disable cores 4, 7 when things heat up.. but with this firmware it also disables 5+6 as well.
If someone uploads a KDZ for the Korean model i'd probably go back... It seems that LG releases updates for the Korean model first as I was on 10i and could have updated to 15B while everyone else is on 10D and 10e.
Click to expand...
Click to collapse
Thx for sharing your experience with us !
Mine is a F510L branded to U+ but I'm stuck on 10e since I rooted my phone because the update is forbidden for rooted users even if I unroot my phone with SuperSU.
There is no F510S KDZ so far from what I know sorry

The H955 rom does not work at all on the f510s. I am not sure why
The flashing process goes perfectly, but for some reason there is no cellular service whatsoever.

hbcdfpq said:
The H955 rom does not work at all on the f510s. I am not sure why
The flashing process goes perfectly, but for some reason there is no cellular service whatsoever.
Click to expand...
Click to collapse
I guess H955 and H959 don't have the same radio so no cellular service.
Some users got the 5.1.1 update for both F510S and F510L.. Hopefully they'll find a way dor sharing a .kdz with us

Lg G4 hard brick... need help please wiling to donate cash.

Hi everybody..
I'm in desperate need of help. After attempting to root my g4 somehow something went wrong and the phone is completely dead with no sign of life . I know there isn't a way yet to unbrick the g4 but I'm hoping somebody out there is working on it and maybe can help me out.. I'm willing to donate for the help Thank you !

What exactly are your symptoms? Does it not even turn on? Have you tried getting into download mode? How exactly did you try to root it? What were your steps and are you able to identify where you went wrong exactly?

petermg said:
What exactly are your symptoms? Does it not even turn on? Have you tried getting into download mode? How exactly did you try to root it? What were your steps and are you able to identify where you went wrong exactly?
Click to expand...
Click to collapse
I was trying to gain root access following this method : http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765. everything seemed to go well but after it was complete the phone wouldn't start and it booted only to a message on the LG LOGO with something failed. At that point I was still able to get to download mood so I tried to restore it to stock doing this : http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848. again the process went like it should but at the end the phone went dead with no signs of life, No led light, No vibration, can't turn on to anything and only gets detected on the computer as " qhsusb bulk ". My guess is I used the wrong KDZ files
I would appreciate it if you can help.

It indeed sounds like you have a hard brick, in which case the device can't be brought back to life.
However for chance, and for future reference. Which kdz did you try to flash? Assuming your device is the ATT model, then did you download the Puerto Rico kdz?
Because there is not a KDZ or TOT for the ATT H810 model the Puerto Rico KDZ from Claro will recover an ATT soft brick. These are labeled H810PR.

xxxwalo said:
I was trying to gain root access following this method : http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765. everything seemed to go well but after it was complete the phone wouldn't start and it booted only to a message on the LG LOGO with something failed. At that point I was still able to get to download mood so I tried to restore it to stock doing this : http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848. again the process went like it should but at the end the phone went dead with no signs of life, No led light, No vibration, can't turn on to anything and only gets detected on the computer as " qhsusb bulk ". My guess is I used the wrong KDZ files
I would appreciate it if you can help.
Click to expand...
Click to collapse
Maybe you downloaded the wrong img file from the first post? It has to not only match your phone, but ALSO match the version of the firmware you're currently running. That's why this method here is better:
http://forum.xda-developers.com/g4/general/lg-g4-100-root-success-directives-root-t3180586
Because you just make a backup img of your system partition and then inject root into that and you have a new rooted system partition img file along with your original system partition image file so you can go back to stock if you want some time later. I'm guessing you tried flashing the wrong version of your firmware. Do you know what version you were on? Looks like the only one listed on that thread is version g. I'm on version b, so if I were to have tried that, I would also have had an error when trying to boot. Had you made a backup of your original system partition as mentioned here you should have simply been able to dd it back and you'd be up and running. However now it looks like you've "hard bricked" your phone indeed. Out of curiosity, which KDZ file did you use? What's the file name that downloaded?
It looks like there are some utilities created that can UNBRICK some phones when they get into this state, but it looks like they have had custom scripts written for the partitions of those phones, for example:
https://www.youtube.com/watch?v=ERZvlJIC9dE
https://forums.oneplus.net/threads/solution-recover-from-hard-bricked-oneplus-one.104943/
Maybe someone familiar with how those apps run could modify that app for unbricking the G4s? Currently however, there doesn't seem to be anything you can currently do to immediately fix your phone. So ... can you get it exchanged or replaced????

xxxwalo said:
I was trying to gain root access following this method : http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765. everything seemed to go well but after it was complete the phone wouldn't start and it booted only to a message on the LG LOGO with something failed. At that point I was still able to get to download mood so I tried to restore it to stock doing this : http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848. again the process went like it should but at the end the phone went dead with no signs of life, No led light, No vibration, can't turn on to anything and only gets detected on the computer as " qhsusb bulk ". My guess is I used the wrong KDZ files
I would appreciate it if you can help.
Click to expand...
Click to collapse
Honestly, bring the phone to ATT and tell them it said an update was available, and upon accepting it...the phone ended up in this state. They will most likely exchange it for you.

warri said:
Honestly, bring the phone to ATT and tell them it said an update was available, and upon accepting it...the phone ended up in this state. They will most likely exchange it for you.
Click to expand...
Click to collapse
not an option because I bought it from somebody on craigslist... I already bought another one so I'll just wait and see if somebody comes up with a solution if not I'll sell it for parts.

xxxwalo said:
not an option because I bought it from somebody on craigslist... I already bought another one so I'll just wait and see if somebody comes up with a solution if not I'll sell it for parts.
Click to expand...
Click to collapse
Any chance they can give you the original receipt and that way you could possibly send it in for warranty work.

CAG-man said:
It indeed sounds like you have a hard brick, in which case the device can't be brought back to life.
However for chance, and for future reference. Which kdz did you try to flash? Assuming your device is the ATT model, then did you download the Puerto Rico kdz?
Because there is not a KDZ or TOT for the ATT H810 model the Puerto Rico KDZ from Claro will recover an ATT soft brick. These are labeled H810PR.
Click to expand...
Click to collapse
Yep that what I did now I need help
---------- Post added at 07:47 PM ---------- Previous post was at 07:44 PM ----------
Can't some upload the complete eMMC IMAGE for the lg g4 at&t to see we can't this to work thanks

same here
i have the same problem any solucions yet?

CAG-man said:
It indeed sounds like you have a hard brick, in which case the device can't be brought back to life.
However for chance, and for future reference. Which kdz did you try to flash? Assuming your device is the ATT model, then did you download the Puerto Rico kdz?
Because there is not a KDZ or TOT for the ATT H810 model the Puerto Rico KDZ from Claro will recover an ATT soft brick. These are labeled H810PR.
Click to expand...
Click to collapse
Sir my lg g4 ATT start problem of bootlooping on factory (stock) rom .yesterday night when i was playing game on it automatically it restarted and starting this problem..
Can i fix it by installing H810PR kdz to my lg g4 H810.
Can this H810PR kdz hardbrick my ATT lg g4? ?

possible to fix
Hi able to recover the phone . Just should do what I tell right
First we need a 16GB or larger memory card...
Phone Orginal KDZ/TOT
your Phone EMMC Dump

please tell how what software are you using and step by step please
---------- Post added 10th January 2017 at 12:00 AM ---------- Previous post was 9th January 2017 at 11:58 PM ----------
regtoyme said:
Hi able to recover the phone . Just should do what I tell right
First we need a 16GB or larger memory card...
Phone Orginal KDZ/TOT
your Phone EMMC Dump
Click to expand...
Click to collapse
did it worked for h810?

its work on lg h810 At&t
first thing is that you need a backup.img of mmcblk partition from running h81020n firmware (Because DOwngrade baeband not support)
you just follow the step to create backup.img
https://forum.xda-developers.com/att-g4/general/att-h810-qualcomm-hs-usb-qdloader-9008-t3539554

http://gsmmarhaba.com/threads/unbrick-lg-g4-brick-hs-usb-qdloader-9008-without-box.612/

Plz someone provide backup file

please someone give backup file who are using rooted lollipoopp

i have hardbricked h810, PLEASE, somebody share dump for this phone

i flashed my h810 with wrong firmware, and i need dump file to recover it, pls if somebody have working g4 with same version, please, share it here!

Hard bricked my LG G4 H8101o
Same issue with my LG G4 AT&T. I flashed the kdz firmware H810PR.kdz using LG Flashtool 2014.
After that, mobile wont even turn on to LG Logo.
No download mode, nor hard reset is working.
It simply shows and qualcomm device in device manager.

Same problem here. I Flashed H810PR kdz on my H81010l. Now it's dead. No power no LED no download mode. Someone help

Atif25192 said:
Same issue with my LG G4 AT&T. I flashed the kdz firmware H810PR.kdz using LG Flashtool 2014.
After that, mobile wont even turn on to LG Logo.
No download mode, nor hard reset is working.
It simply shows and qualcomm device in device manager.
Click to expand...
Click to collapse
FRK01 said:
Same problem here. I Flashed H810PR kdz on my H81010l. Now it's dead. No power no LED no download mode. Someone help
Click to expand...
Click to collapse
You both have a completely bricked device. Theres no fix. NEVER flash wrong model firmware.

hyelton said:
You both have a completely bricked device. Theres no fix. NEVER flash wrong model firmware.
Click to expand...
Click to collapse
There's a fix available on xda, only we need system dumb file. May be there's some kind souls who upload it.
And please do not discourage if you don't know actually about the problem. Thanks

my h810 9008

see http://forum.gsmhosting.com/vbb/f98...810-emmc-repair-fump-uploaded-512-mb-2155756/

HI he is 15 USD and share dump H810 for 2gb, 4gb, 6gb fasebook id vinh phạm

h810 dump http://ouo.io/XK4tFF

https://drive.google.com/drive/u/0/mobile/folders/0B6XUJmgcvQsfSm03dWJTTWY2cFE
---------- Post added at 04:50 AM ---------- Previous post was at 04:50 AM ----------
Dump file H810

http://forum.gsmhosting.com/vbb/f98...810-emmc-repair-fump-uploaded-512-mb-2155756/
h810 dump

what to do with this dump now ?
mine h810 too hard bricked

Search on net... Unbrick-lg-g4-h811-9008-qualcomm

Solution?
Hi,
were you able to unbrick your LG G4? I flashed with the wrong ROM, and the phone is not turning on, just making pop on and pop off sounds when i plug it to the PC, and is on QHSUSB_BULK in the device manager.
I have found lot of tutorials online to unbrick, but they are different version like lg g2 and g3, it seems there is no fix for LG G4 models. If you unbricked the LG G4 can you share all the steps you followed? Thanks

Hi, did some one try this method with our 810 dump file(flash via sdcard)? is that become alive?
http://forum.xda-developers.com/tmobile-g4/help/unbrick-lg-g4-h811-9008-qualcomm-t3456421

FRK01 said:
https://drive.google.com/drive/u/0/mobile/folders/0B6XUJmgcvQsfSm03dWJTTWY2cFE
---------- Post added at 04:50 AM ---------- Previous post was at 04:50 AM ----------
Dump file H810
Click to expand...
Click to collapse
is this file works or not anyone tried it ??

how
the dump can work?you have try it?