Related
Hello Guys, i have to show you, how you can recover your LG P720/725 and 720H. It´s very simple. Since i have my LG P720 i have reflashed my phone so often by this step´s
there give´s 3 methodes to bring your Smarthphone back to orginal
First what do you need.
First off all you need the KDZ from your Phone and the *.cp and *.ap also the binarys
----------- S/W MODE --------------
Plugged your Batterie out of the Phone. Wait 3 seconds.
Bring it back and insert your USB Cable to the Phone. Then Hold the Volume+ Button for 6 seconds. Your S/W Mode will start.
Now Connect your Phone to the PC, maybe you must install the Driver. (There are in the LG Flash Tool Package included)
If you didn´t flashed your Phone and it´s bricked automaticly , you can use the First Methode
--------First Methode ------
Connect Your Phone via USB to the PC and bring your Phone in the S/W Mode.
Start your LGMobile Support Tool and start the Emergency Mode, it will download the KDZ and flash it new to the Phone.
You have flashed a wrong Bin or KDZ to your Phone? Or Your Bootloader is bricked, also Bootloop ? Use this Methode
---------- Second Methode-----------------
You need the "LG Flash Tool Package" and the full working "LPG720 DLL" you can get the FlashPack here p92x.acidhazardrom.com/ccount/click.php?id=15 . This Includes all relevant Drivers, install it.
Here in the Post you find the LG Flash Tool 1.2 without Drivers
and the DLL are from here http://forum.xda-developers.com/attachment.php?attachmentid=1937519&stc=1&d=1367761284
The SmartFlash Tool http://hotfile.com/dl/143853325/ed430ad/SFT.rar.html Password [email protected]
--If You have a Behavior Blocker on your PC, disable it ---
Install all Drivers from the LG FlashPack.
Bring your Phone to the S/W Mode, install the Drivers.
So after you installed it, go to your Device Manager on the PC and change the Comport under connections > LG Modem ..... to COM41. Disconnect your Phone.
Install the FlashTool, then Start the LGFlashTool.exe from the LG Flash Tool 1.2. Then Select Manual Mode, choose the DLL and add your AP.bin and CP.fls. Press OK. Goto the COMConnector Button and Choose the Port 1. OK. Click on the Arrowbutton , the Program will be ready. Connect your Phone in S/W Mode now to the PC. It start´s automaticly and flash´s your device new.
After your Phone is ready, check your Mobile Network, if its false,"No conenction" you have to reflash the Baseband.
Use the Smartflash Tool, bring your Phone Back to S/W, start Smartflash and connect your phone. Goto the Register Rom Copy D/L under CP Bin use the *.fls binary. Click the Button "Start" now the Smartflash flash´s the Baseband new.
Now Your Phone is NEW.
---------------------------------------------------------------
My Smartphone is Permantently Bricked, bootloop, flashtool can´t flash anything(but i have used it correctly), Kernel Error or anything else
----------- The Third Methode-------------
So Guys, this is complicated for noobs.
You need the OAMP TOOL, download it here http://forum.xda-developers.com/attachment.php?attachmentid=1937574&stc=1&d=1367763391
Now unplug your Batterie from the Phone, and connect it via USB to the PC. Now he will install the Driver, make it manual and choose the Driver from the folder usb_drv_windows, includes in the Package your downloaded.
So now if you have installed the Driver, start the "start_fastboot.bat". Choose your Phone and press the Button on your keyboard, the Tool will bring your Device to the Fastboot mode, if its write to start the mode "Pls wait 5 secondes " is now in the Screen read. Plug your batterie back to your phone.
then choose "install orginal bootloader" and follow the Steps. After you have to all, bring it back to the S/W Mode and follow Second Methode.
------------------------My S/W Mode is Gone-------------------
Follow Third Methode, but hold your vol up button permanetly , this will bring your Phone to the S/W Mode.
----------------------- Nothing goes, i think my Device is Bricked permantenly, fastboot can find any partitions or any thing else--------------------------
After i had this Problem, i fixxed it. So start Omap, choose your device. Hold permanently your Vol up button, plugg the Cable to usb and insert the Batterie. Omap brings your phone back to S/W.
Now flash your Stock Image with FlashTool, maybe 3 Times.
It works for me
----------- Other Mode KDZ_FW_UPD ---------------
i have forgot to tell you this mode. For this you need the KDZ File.
Download http://forum.xda-developers.com/attachment.php?attachmentid=1949514&stc=1&d=1368135582
Its the same methode with the LG Mobile Support Tool, but offline.
Bring your Phone to S/W Mode and connect it to the PC.
First you have to edit your hosts file. Open it and insert this 127.0.0.1 csmg.lgmobile.com
then start kdz server, start windows enabler. See at the Tryicon click on it and make it ON.
Then open UpTestEX_mod2_marwin
On the rigth side, click on select kdz file. Choose your KDZ.
On the Bottom start "normal web upgrade test"
Then Upgrade Start.
The Mobile Support Tool opens and flashs the KDZ
This was a short Guide to bring your Phone back. If You have questions so ask pls =). Btw sry for my bad English, but i hope you can understand it
Added CWM for P720 maybe P920
updated
TNX MasterTobi YOU GIVE ME A VERY GOOD IDE AND I HAVE SIVE MY DEVICE:good:
toty250 said:
TNX MasterTobi YOU GIVE ME A VERY GOOD IDE AND I HAVE SIVE MY DEVICE:good:
Click to expand...
Click to collapse
Good Job
re is a little difficult to boot in, and only stock function can shutdown the phone. hope more perfect one will come soon
Sent from my LG-SU870 using xda premium
ms2003 said:
re is a little difficult to boot in, and only stock function can shutdown the phone. hope more perfect one will come soon
Sent from my LG-SU870 using xda premium
Click to expand...
Click to collapse
to boot in what ? and what do you mean with " and only stock function can shutdown the phone"
MasterTobi said:
Hello Guys, i have to show you, how you can recover your LG P720/725 and 720H. It´s very simple. Since i have my LG P720 i have reflashed my phone so often by this step´s
there give´s 3 methodes to bring your Smarthphone back to orginal
First what do you need.
First off all you need the KDZ from your Phone and the *.cp and *.ap also the binarys
Click to expand...
Click to collapse
Hi,
How do I get the binary files?
Also, the SFT.rar file is asking for a password.
If I have the KDZ, .bin and .fls files, i can use this method to upgrade to later version of software as well ( I am on V10C on P725, I can use this method to upgrade to V10F as well)
please help.
schubeir
ok if you read the Guide you find
The SmartFlash Tool http://hotfile.com/dl/143853325/ed430ad/SFT.rar.html Password [email protected] <<<<<< Passwort
the Binary files are from the KDZ, you musst extract them with LG Extract Tool
you can Use SFT or LG Faslhtool to flash you binarys.
If You have only the KDZ Use KDZ_UP......
Good Job !!!
Dear MasterTobi, hello!
I am trying all these methods, but I can't unbrick my phone! I can enter 2 different screens for S/W Upgrade, one by normal mode, another by OMAP boot mode, bu tin anyone my phone goes live... Do I have to select the port 41 in LG Modem in Device Manager, and after this, port 1 in the LG Flahs Tool? Is it correct? When I try to do this, I got the message "Downlaod Fail" each 20 seconds in the port 1 field at the LG Flash Tool.
I tried the methods in this post and another ones, but anyone works for me. Do you have any idea?
Thank you very much!
MasterTobi said:
Hello Guys, i have to show you, how you can recover your LG P720/725 and 720H. It´s very simple. Since i have my LG P720 i have reflashed my phone so often by this step´s
there give´s 3 methodes to bring your Smarthphone back to orginal
First what do you need.
First off all you need the KDZ from your Phone and the *.cp and *.ap also the binarys
----------- S/W MODE --------------
Plugged your Batterie out of the Phone. Wait 3 seconds.
Bring it back and insert your USB Cable to the Phone. Then Hold the Volume+ Button for 6 seconds. Your S/W Mode will start.
Now Connect your Phone to the PC, maybe you must install the Driver. (There are in the LG Flash Tool Package included)
If you didn´t flashed your Phone and it´s bricked automaticly , you can use the First Methode
--------First Methode ------
Connect Your Phone via USB to the PC and bring your Phone in the S/W Mode.
Start your LGMobile Support Tool and start the Emergency Mode, it will download the KDZ and flash it new to the Phone.
You have flashed a wrong Bin or KDZ to your Phone? Or Your Bootloader is bricked, also Bootloop ? Use this Methode
---------- Second Methode-----------------
You need the "LG Flash Tool Package" and the full working "LPG720 DLL" you can get the FlashPack here p92x.acidhazardrom.com/ccount/click.php?id=15 . This Includes all relevant Drivers, install it.
and the DLL are from here http://forum.xda-developers.com/attachment.php?attachmentid=1937519&stc=1&d=1367761284
The SmartFlash Tool http://hotfile.com/dl/143853325/ed430ad/SFT.rar.html Password [email protected]
--If You have a Behavior Blocker on your PC, disable it ---
Install all Drivers from the LG FlashPack.
Bring your Phone to the S/W Mode, install the Drivers.
So after you installed it, go to your Device Manager on the PC and change the Comport under connections > LG Modem ..... to COM41. Disconnect your Phone.
Install the FlashTool, then Start the LGFlashTool.exe from the LG Flash Tool 1.2. Then Select Manual Mode, choose the DLL and add your AP.bin and CP.fls. Press OK. Goto the COMConnector Button and Choose the Port 1. OK. Click on the Arrowbutton , the Program will be ready. Connect your Phone in S/W Mode now to the PC. It start´s automaticly and flash´s your device new.
After your Phone is ready, check your Mobile Network, if its false,"No conenction" you have to reflash the Baseband.
Use the Smartflash Tool, bring your Phone Back to S/W, start Smartflash and connect your phone. Goto the Register Rom Copy D/L under CP Bin use the *.fls binary. Click the Button "Start" now the Smartflash flash´s the Baseband new.
Now Your Phone is NEW.
---------------------------------------------------------------
My Smartphone is Permantently Bricked, bootloop, flashtool can´t flash anything(but i have used it correctly), Kernel Error or anything else
----------- The Third Methode-------------
So Guys, this is complicated for noobs.
You need the OAMP TOOL, download it here http://forum.xda-developers.com/attachment.php?attachmentid=1937574&stc=1&d=1367763391
Now unplug your Batterie from the Phone, and connect it via USB to the PC. Now he will install the Driver, make it manual and choose the Driver from the folder usb_drv_windows, includes in the Package your downloaded.
So now if you have installed the Driver, start the "start_fastboot.bat" follow the Steps. BUT we choose press now the the Button 1 on your keyboard, the Tool will bring your Device to the Fastboot mode, if its write to start the mode "Pls wait 5 secondes " is now in the Screen read. Plug your batterie back to your phone.
then choose "install orginal bootloader" and follow the Steps. After you have to all, bring it back to the S/W Mode and follow Second Methode.
------------------------My S/W Mode is Gone-------------------
Follow Third Methode, but hold your vol up button permanetly , this will bring your Phone to the S/W Mode.
----------------------- Nothing goes, i think my Device is Bricked permantenly, fastboot can find any partitions or any thing else--------------------------
After i had this Problem, i fixxed it. So start Omap, choose your device. Hold permanently your Vol up button, plugg the Cable to usb and insert the Batterie. Omap brings your phone back to S/W.
Now flash your Stock Image with FlashTool, maybe 3 Times.
It works for me
----------- Other Mode KDZ_FW_UPD ---------------
i have forgot to tell you this mode. For this you need the KDZ File.
Download http://forum.xda-developers.com/attachment.php?attachmentid=1949514&stc=1&d=1368135582
Its the same methode with the LG Mobile Support Tool, but offline.
Bring your Phone to S/W Mode and connect it to the PC.
First you have to edit your hosts file. Open it and insert this 127.0.0.1 csmg.lgmobile.com
then start kdz server, start windows enabler. See at the Tryicon click on it and make it ON.
Then open UpTestEX_mod2_marwin
On the rigth side, click on select kdz file. Choose your KDZ.
On the Bottom start "normal web upgrade test"
Then Upgrade Start.
The Mobile Support Tool opens and flashs the KDZ
This was a short Guide to bring your Phone back. If You have questions so ask pls =). Btw sry for my bad English, but i hope you can understand it
Click to expand...
Click to collapse
yes you have to use the DLL from the first post, include it in flashtool "select Model from DLL " or so. in the screen you can change your bin files
Wellington.BK said:
Dear MasterTobi, hello!
I am trying all these methods, but I can't unbrick my phone! I can enter 2 different screens for S/W Upgrade, one by normal mode, another by OMAP boot mode, bu tin anyone my phone goes live... Do I have to select the port 41 in LG Modem in Device Manager, and after this, port 1 in the LG Flahs Tool? Is it correct? When I try to do this, I got the message "Downlaod Fail" each 20 seconds in the port 1 field at the LG Flash Tool.
I tried the methods in this post and another ones, but anyone works for me. Do you have any idea?
Thank you very much!
Click to expand...
Click to collapse
You can follow this guide which works for All OS versions of Windows .
If you need any help, you can post there http://forum.xda-developers.com/showthread.php?t=2246001
Sorry, but if I use your DLl, I got the message "Model Name is different! Chel phone or DLL!".
Also, I tried the smartflash tool, selecting the ap and cp. At the ending, appears a mesage "Magic number doesn't concide".
And finally, I tried the "Normal web upgrade test". This one looked as my phone would return to life, but not...
In any of methods I could turn on the phone. I don't know what I can do know. I am very, very afraid...
MasterTobi said:
yes you have to use the DLL from the first post, include it in flashtool "select Model from DLL " or so. in the screen you can change your bin files
Click to expand...
Click to collapse
---------- Post added at 01:16 AM ---------- Previous post was at 01:11 AM ----------
Dear Kahale,
The method didn't work for me... I don't know why, I don't know what else more I can do... If you have a light for me, please...
Thanks!
Karim Kahale said:
You can follow this guide which works for All OS versions of Windows .
If you need any help, you can post there http://forum.xda-developers.com/showthread.php?t=2246001
Click to expand...
Click to collapse
This guide is for P720, right? not Optimus 3D.
@wellington, which phone do you have?
Karim's guide is not for 3D Max, right???
drastic00 said:
This guide is for P720, right? not Optimus 3D.
@wellington, which phone do you have?
Karim's guide is not for 3D Max, right???
Click to expand...
Click to collapse
My guide is similar to the Resurrection guide which supports 3D MAX, the difference is that I've added some different steps and a slightly different method.
My phone is a 3D MAX, a P725.
Tx!
drastic00 said:
This guide is for P720, right? not Optimus 3D.
@wellington, which phone do you have?
Karim's guide is not for 3D Max, right???
Click to expand...
Click to collapse
Ok then, good luck!
Never mind.
Sent from my LG-P720 using xda premium
oh guys...............
so you have a magic number ........ strange, there is only the error if you have a wrong version
you have to download the LGP720AT-00-V10e-EUR-XXX-JUL-17-2012+0_AP this is for the P720/P725 alias 3D MAX
Success!
Hey people! I got success! After many days trying, I unbricked my phone! I will tell you what I did.
- My phone is a P725. I don’t know exactly where is it from. This information (P725) was very important for me in the unbricking process.
- I used the LG Flash Tool 1.3.77.21 (http://forum.xda-developers.com/attachment.php?attachmentid=984864&d=1333650043).
- Now, the two cheats that helped me to unbrick my phone:
1st: I didn’t use the .dll from the first page of this post, and I didn’t use the .dll, .bin and .fls extracted from the KDZ gotten from the IMEI of the phone. They didn’t work for me. I googled for these files for P725AT, which was the model that LG Flash Tool was telling me that is my phone. I found the following files:
http://freakshare.com/files/e6xssy95/BIN_LGP725AT-00-V10b-ARB-XXX-MAY-08-2012-0.zip.html
http://uploaded.net/file/v6orqts2
2nd: At the flashing process, there is a pause at 80% telling that the phone will reset. In some cases, the reset really occurs, but in my case, the reset didn’t occur. A lot of errors appeared (see the image), but no problem. I just turned on my phone, and BINGO! It was working again.
It’s important to tell that I had to put my phone in download mode using the OMAP TOOL, that can be found in the first page of this post (http://forum.xda-developers.com/attachment.php?attachmentid=1937574&stc=1&d=1367763391). Don’t forget to change the LG USB COM Port to 41.
That is my history! I hope that this help someone. I would like to thank everybody who wrote about the brick of this phone (MasterTobi, Karim Kahale, Eklovya Dutta [I'm not certain of how to link for them, sorry!] and anybody else), I believe that is one of the worsts bricks in smartphones…
Good luck for all!
EDIT:
I forgot to tell: all the process was made in a Windows 8 64 bit. It gave me some difficults to install all the drivers, but it is possible, Google it and found how to.
My LG G2 D800 (AT&T) 32 GB is stuck in download mode and I cannot flash the stock ROM to it.
I can't get out of download mode no matter how I try to press keys at boot, etc. -- just a black screen with the LG logo.
adb devices returns no devices found.
Shows in Windows Device Manager as "LGE AndroidNet USB Serial Port (COM4)."
Flash Tool finds my device, but when I try to flash (using dll C:\Users\SAdra\Downloads\LGD800_20130904_LGFLASHv160.dll and S/W LGD800AT-01-V10O-310-410-OCT-19-2013+0.tot), it fails immediately and says "Model Information Check Fail!"
It shows "IMEI : " and "Model : ". That's really scary if that information has truly disappeared (not sure how that could have happened though). I at least have the IMEI on a sticker on the back.
I used ioroot to successfully enter root mode, so I should have an EFS backup, but I don't know how to recover it since I'm in download mode and the only tool I have to work with is the LG FlashTool, which isn't happy with me right now. I've tried key combinations but I can't seem to enter recovery mode or fastboot or anything from here.
Previously I was stuck in a fastboot loop but then I re-flashed most of the stock partitions from (downloads.codefi.re 10d_partitions directory under D800 Stock_Firmware) -- I remember doing this for aboot, boot, dbi, laf, modem, recovery, and abl1 -- I was following some dumb forum post in which someone recommended doing that -- duhh...
I would be happy at this point if I could get back into my fastboot loop -- at least I could flash stuff from there.
What got me into the fastboot loop in the first place was flashing the BeanStalk ROM (it was a two-part thing where you were supposed to first flash the main ROM and then flash a device-specific patch -- well, the initial ROM flash got me into the fastboot loop).
Any recommendations? If I were to use Linux, would I have any other options -- I've seen people mention flashing partitions using dd?
At this point I'm about ready to take it in to AT&T (still under warranty / in contract) and beg for help, although I know I've obviously voided my warranty by rooting it.
I've seen a few older threads where people are stuck in download mode and have the same "model information" error in FlashTool, and it seems nobody ever replies to those threads, so I think I'm out of luck. If anybody has gone through this or has any idea what I can do, I would really appreciate the help.
Thanks,
I have the same problem with my G2. I am stuck at the LG logo. No recovery and download mode stuck at the dots. Phone is recognized (while its showing the LG logo) on the control panel as LGE AndroidNet USB Serial port (41) and LGE AndroidNet USB modem. I have tried all tutorials (hard resets, linux etc) I found but nothing worked. Anyone with suggestions???
thanks
bassist82 said:
I have the same problem with my G2. I am stuck at the LG logo. No recovery and download mode stuck at the dots. Phone is recognized (while its showing the LG logo) on the control panel as LGE AndroidNet USB Serial port (41) and LGE AndroidNet USB modem. I have tried all tutorials (hard resets, linux etc) I found but nothing worked. Anyone with suggestions???
thanks
Click to expand...
Click to collapse
did you solved it? im in same situation
Any news? Thanks
bassist82 said:
I have the same problem with my G2. I am stuck at the LG logo. No recovery and download mode stuck at the dots. Phone is recognized (while its showing the LG logo) on the control panel as LGE AndroidNet USB Serial port (41) and LGE AndroidNet USB modem. I have tried all tutorials (hard resets, linux etc) I found but nothing worked. Anyone with suggestions???
thanks
Click to expand...
Click to collapse
did you found the solution ?? same problem
I'm in the same situation. Flashed the wrong rom and now stuck at lg logo. Lg flash tool keeps erroring out with mismatch model numbers. The universal file also errors out. Anyone have a way to save it? I even hex edited the files and ended up with mismatched bin number. I feel I'm so close. Lg flash tool just keeps getting confused. Is it a full brick and a lost cause?
Sent from my SM-G900T using Tapatalk
Anybody???
Sent from my SM-G900T using XDA Free mobile app
I had the same problem quite a while ago and found that the firmware i downloaded was not the right one, downloaded 20c and related dll and it worked search for it.
Sent from my LG-D800 using XDA Free mobile app
lingarajug said:
I had the same problem quite a while ago and found that the firmware i downloaded was not the right one, downloaded 20c and related dll and it worked search for it.
Sent from my LG-D800 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for the suggestion but it still didn't work. Here are pics for what's happening.
1.) It's an at&t g2.
2.) Here's the wrong ROM that was flashed. (Cloudy)
3.) This is the error I Gerry from lgflashtool. (Wrong model)
4.) If I use the alternate DLL in op post then this is the error. (Crossdll)
I just can't get it to unbrick. Any other suggestions I'm site would help a ton of other people. Thanks in advance!
Sent from my Samsung Galaxy S5 using XDA Free mobile app
In the 2nd pic it says f320l but in 3rd pic it says d801 T-Mobile and firmware version reads 20e, if it is an at&t phone there is only 20c tot and dll available now, so if u could go back to stock recovery and clean everything and then download 20c firmware and dll u should be good to go. If u still cant flash 20c firmware try 20d not 20o as it 20d is what my g2 came with first.
Sent from my LG-D800 using XDA Free mobile app
lingarajug said:
In the 2nd pic it says f320l but in 3rd pic it says d801 T-Mobile and firmware version reads 20e, if it is an at&t phone there is only 20c tot and dll available now, so if u could go back to stock recovery and clean everything and then download 20c firmware and dll u should be good to go. If u still cant flash 20c firmware try 20d not 20o as it 20d is what my g2 came with first.
Sent from my LG-D800 using XDA Free mobile app
Click to expand...
Click to collapse
That's what's weird. I am using the 20c tot. I have stock recovery. Return to factory does nothing. Still a brick. Anyone else have my problem and overcome it?
Sent from my SM-G900T using XDA Free mobile app
jayb222 said:
That's what's weird. I am using the 20c tot. I have stock recovery. Return to factory does nothing. Still a brick. Anyone else have my problem and overcome it?
Sent from my SM-G900T using XDA Free mobile app
Click to expand...
Click to collapse
Pm me I think I can help. Sorry I may be a month late
SamerAdra said:
My LG G2 D800 (AT&T) 32 GB is stuck in download mode and I cannot flash the stock ROM to it.
I can't get out of download mode no matter how I try to press keys at boot, etc. -- just a black screen with the LG logo.
adb devices returns no devices found.
Shows in Windows Device Manager as "LGE AndroidNet USB Serial Port (COM4)."
Flash Tool finds my device, but when I try to flash (using dll C:\Users\SAdra\Downloads\LGD800_20130904_LGFLASHv160.dll and S/W LGD800AT-01-V10O-310-410-OCT-19-2013+0.tot), it fails immediately and says "Model Information Check Fail!"
It shows "IMEI : " and "Model : ". That's really scary if that information has truly disappeared (not sure how that could have happened though). I at least have the IMEI on a sticker on the back.
I used ioroot to successfully enter root mode, so I should have an EFS backup, but I don't know how to recover it since I'm in download mode and the only tool I have to work with is the LG FlashTool, which isn't happy with me right now. I've tried key combinations but I can't seem to enter recovery mode or fastboot or anything from here.
Previously I was stuck in a fastboot loop but then I re-flashed most of the stock partitions from (downloads.codefi.re 10d_partitions directory under D800 Stock_Firmware) -- I remember doing this for aboot, boot, dbi, laf, modem, recovery, and abl1 -- I was following some dumb forum post in which someone recommended doing that -- duhh...
I would be happy at this point if I could get back into my fastboot loop -- at least I could flash stuff from there.
What got me into the fastboot loop in the first place was flashing the BeanStalk ROM (it was a two-part thing where you were supposed to first flash the main ROM and then flash a device-specific patch -- well, the initial ROM flash got me into the fastboot loop).
Any recommendations? If I were to use Linux, would I have any other options -- I've seen people mention flashing partitions using dd?
At this point I'm about ready to take it in to AT&T (still under warranty / in contract) and beg for help, although I know I've obviously voided my warranty by rooting it.
I've seen a few older threads where people are stuck in download mode and have the same "model information" error in FlashTool, and it seems nobody ever replies to those threads, so I think I'm out of luck. If anybody has gone through this or has any idea what I can do, I would really appreciate the help.
Thanks,
Click to expand...
Click to collapse
Hey,i had same issue but i solved it with srk tool 2.0 try it,it works for me don,t forget to hit thanks
So, here's the story: I wanted to root my d850 on LP version D85021R, Tried all methods posted here, including this, this, and this. None worked. So I decided to downgrade to KK using tot/kdz method by hyelton. Downloaded LGD850AT-01-V10d-310-410-JUN-19-2014+0.tot file and LG flash tool 1.8.x and flashed the tot file. Progress went above 85% and then phone rebooted, but never came back to life; super-bricked, no led, no boot screen, no download mode, no recovery mode, NOTHING! except that it identified as QHUSB_BULK in Win7, which upon installation of drivers turned to qhsusb_dload 9008. Tried all unbricking methods including Board Diag, Flashtool ,etc. none worked. So I took it to a repair guy, who probably used octopus box to copy image from another g3 (at least that's what I think, he would not let me see but i sort of glanced over). After copying that image to my g3, it turned back to life, i.e., boot screen appeared and download mode/recovery mode worked, but it was in a boot loop. however, that guy also tried flashing V10D using flashtool, and same thing happened, i.e., super-brick again. After a day of trying he gave up on it but was kind enough to give it back half alive. So now boot screen appears, download mode works, gets recognized as LGE Mobile USB Serial Port, and LGE Android MTP Device with a yellow triangle. I cannot access fastboot mode due to locked bootloader, or else I would have tried flashing partition images through fastboot, as bootloader and boot partitions are intact, so I would not touch them but could try flashing other partitions. LG Flashtool flashes the whole package so the boot sector also gets over written, which somehow is not compatible with stock rom. One thing which I have not mentioned is that I did not buy it new but refurb one, so may be some part was changed, but which one, no idea. I tried to get it recognized it in linux, but does not work; shows up as libmtp-1-1 in /dev, which is not mountable. However I was able to pullout one interesting fact, which might give some hint. dmesgs shows a serial number for this device which starts as LGD855xxxxxxx, whereas the serial number printed on the back is different, where it shows as d850 and serial number is also different, i.e., 406KPXVxxxxxx.
Now I am out of options. Can someone please suggest what else to do. Also, can someone confirm that the serial number shown in dmesgs when connected to USB port, starting with LGD855xxxxxx can be a d850?
Any help is welcome
First off when flashing almost every time it'll fail at 85%. That's normal. Anything after80% is just rebooting of the phone.
Now what your having is not normal. Maybe whatever the repair shop did changed the serial? And your issue usually means your bricked completely sadly.
Before your downgraded, was your phone booting normally or did the root do something to make it originally boot loop before trying to downgrade ?
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Thanks for replying hyelton. I fully understand that and also that rebooting should bring the phone to blue reset screen, but it didn't. Instead it died.
The serial number and IEMI fortunately are intact, and are read by firmware when present. Sadly I tried to flash the firmware again through Board DL option, but failed again, so back to QLoader 9800 mode. On WinXP, smart boot diagnostics recognized it and proceeded to flash boot/recovery, but sadly the accompanied AP_Chip file neither has D850 nor D855 Smart_Boot.bin files. So I flashed EUR xxxx.xxx version. Phone still dead, but no Qloader 9800 mode, instead Android Phone device started showing up, which had no supported drivers. After some effort, Windows 7 download drivers and it got recognized as AlCatel Android Phone, lol! No adb and fastboot in Windows, and no Serial communication was possible. I tried linux and there fastboot was showing a device without id, like ??????????, but it did allow me to flash individual mbn paritions extracted from D850 tot to their respective partition, but I discovered I cannot flash through fastboot files larger than 2GB, so no system and no userdata; those were erased only. Upon reboot and return to windows, phone is still dead (without any life) and back to Qloader 9800 mode.
So now I'm stuck due to lack of firmware files. I am afraid to flash a boot or recovery partition extracted from any other firmware, but can try D855 since it worked partially to bring download/recovery partitions and LG logo was also displayed upon turning on. I think it even booted basic kernel in download mode, because I was able to send reboot command through Send_Command.exe and it rebooted. So scripting was also a possible option, but not anymore.
Is the partition layout of D850 and D855 available somewhere? I tried to find but could only find for D851. If someone having these variants is willing to help, I'll post the commands to get partitions layout, or even partition images could be created using dd command if phone is rooted.
To your question, no, the rooting methods did nothing. It was working normal. But somehow I came across a lot of threads that suggested hassle-free downgrading to KK for rooting, and pointed to your guide which surely is hassle-free but not for a troubled phone like mine
BTW, I do have Flashtool log files for original downgrade and then reflashing yesterday. If someone wants to take a look...
Further development: Today I visited the main mobile market in my city, and first went to same shop from where I bought this set. They had a number of other sets in the same batch, so I copied partition tables info and prop files from each device. Also, I had to buy the same set for a friend. I have asked him to lend it over to me for weekend. Now, first I'll try to find the rom versions installed on these sets and see what I can do.
Secondly, is there a way I can copy the whole emmc partitions from alive phone to dead phone? The dead phone can be accessed on serial port. I know I can get partition dumps, but how to write them on bricked phone, that is the question. There must be a software that can access emmc through phone ports and clone it. Help please!
unikorn74 said:
Further development: Today I visited the main mobile market in my city, and first went to same shop from where I bought this set. They had a number of other sets in the same batch, so I copied partition tables info and prop files from each device. Also, I had to buy the same set for a friend. I have asked him to lend it over to me for weekend. Now, first I'll try to find the rom versions installed on these sets and see what I can do.
Secondly, is there a way I can copy the whole emmc partitions from alive phone to dead phone? The dead phone can be accessed on serial port. I know I can get partition dumps, but how to write them on bricked phone, that is the question. There must be a software that can access emmc through phone ports and clone it. Help please!
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Flash it to D855 Lollipop version via octopus than write DUMP
It does work, indeed. We did it together, didn't we, aamszia?
To elaborate further, Aamir helped me out by writing D855 bootloader through octopus box. That was done before but flashing a KK rom again bricked it. Only this time, he flashed a d855 lollipop kdz rom (v20g, if I remember correctly). That made it functional; everything worked, except radio. Flashing a d850 LP radio would not work; flashing a KK radio would brick it. So I took a dump of mmcblk0 from a fully functioning, rooted, recovery flashed LP d850, via terminal using dd command (I chose to write only first 4gb or so due to smaller sdcard I had. That covered all partitions except cache and userdata, which were not needed anyway). Then I wrote back the dump on the bricked d850 using dd command from terminal. I tried flashing TWRP on it first, but somehow it did not work, and gave secure bootloader error. So I had to do it via terminal. I knew once it starts writing, the system would become unstable due to overwriting of partition table, kernel, system, and stuff, but I had to give it a try, and it worked! Screen went off immediately, but I touched it again after half an hour; pulled out and reinserted the battery; tried recovery and there it was. Rest was easy. Just formatted cache and data, and my phone was back to life.
Well I just picked up a phone that is a t mobile phone that has a metro pcs rom installed on it. I got it for under 20 bucks so not much money lost if this won't work I took the risk since it entered download mode ok and recovery mode also (no twrp installed or adb enabled). I cannot for the life of me get flash tool or lgup to work with it. lgup sees it as unknown and flash tool tells me it can't find required info. I just want a stock rom that works. Once I get there I can think about rooting. Oh and lg mobile support does see the phone and attempts to download but then just says "downloading" and the clock stops at like 25 seconds. No progress bar. While I realize I may have to defer to LG on this one it seems this SHOULD be fixable if only I could access it through download mode somehow. An help would be appreciable.
Greetings everyone. I didn’t find a thread for this specific phone model. So I am putting it up here. Few days back I decided to unlock the bootloader of my LG W41 (LM-K610IM) and upgrade to a custom ROM. So, I used fastboot mode to unlock the bootloader and up until now everything went like a dream. Problems started when I couldn't get a TWRP recovery for my specific model. I downloaded a generic one and first tried to push it to my recovery partition. That's when I learned my phone doesn't have a recovery partition. I don't know what came to me then I used fastboot flash command to flash the TWRP image to my boot partition. It was successful but my phone won't start after that. It was a softbrick. Only the LG logo started bootlooping. But the worse was still not over. In an attempt to restore my device I searched everywhere for the stock ROM as the official website is down, but couldn't find any. At last, I zeroed in on a similar device by the same manufacturer LG K52. It had the ditto hardware like LG W41. Even the model number was similar. So, I downloaded the KDZ file. Extracted the dz from the kdz and the boot.img from the dz using LG KDZ extractor . Made a scatter file using a Hovatek instruction and using WWR MTK tool and formatted my device using SP flash tool and flashed everything. Till now my device was detected by the Windows 11 PC as a LGE device. Anyways the SP tool successfully flashed everything but after that my won't turn on any more. It's total dead. It won't power on, pc won't recognize it. I have tried connecting using USB and all possible hardware key combinations. It is dead bricked I think. All because of my stupidity. Now my question is, does it have any hope left or should I throw it away and buy a new device? I am keeping my fingers crossed and hope to find a superhero
Edit 1: SP Flash tool doesn't see my device any more. I have all the specific drivers installed. From LG and from Mediatek.
Try LG Bridge or check lg-firmwares.com
or
buy/borrow second device and 1:1 clone with mtkclient
Thanks for the quick response, but I have already tried LG Bridge, LGUP . After soft brick LGUP was seeing device as "unknown at COM Port 9". After hard brick it doesn't see it any more. Actually my PC won't see the device anymore
The firmware is not available at LG-firmwares.com but I have requested for it there. Keeping fingers
you should be able to repair preloader from bootrom mode (BROM)
How to enter bootrom mode. I am sorry if it is a noob question
Soumyadip999 said:
How to enter bootrom mode. I am sorry if it is a noob question
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XRed_CubeX said:
To put your device in BRom mode you may need a different key combination or a test point, find out on the internet how to put the device in BRom mode or ask various devs of that device
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find KCOL0 test point and short to GND
https://forum.hovatek.com/thread-11802.html
Okay let me ask and I will follow up. Thank you for the amazing guidance. Let's see if the poor device could be saved
you should poll lsusb in linux while trying to connect usb with both vol keys pressed. disconnect battery from pcb if possible to ensure phone is off.