Rollback Optimus 4X HD from 4.1.2 JellyBean to 4.0.3 Stock ICS
- Thread starter SnXo
- Start date
Turtorial
I´ve made a smal Videotorturial for this thread.
http://www.youtube.com/watch?v=NDyZ8pH2jp0
greetings
by SnXo
P.S: Thanks RuedasLocas for your notes
I´ve made a smal Videotorturial for this thread.
http://www.youtube.com/watch?v=NDyZ8pH2jp0
greetings
by SnXo
P.S: Thanks RuedasLocas for your notes
Last edited:
why?
Silly question maybe but us it the kernel change that comes with v20a that doesnt allow us to just flash 10d the same way we flashed the jb leak with fwd kdz updater?
Silly question maybe but us it the kernel change that comes with v20a that doesnt allow us to just flash 10d the same way we flashed the jb leak with fwd kdz updater?
V20a has new bootloader but old kdz files just used the existing bootloader
Sent from my LG-P880 using Tapatalk 2
Which windows do you use? I got the same results on my win8 pc, had to use a win7 pc in the end
Sent from my LG-P880 using xda app-developers app
Sent from my LG-P880 using xda app-developers app
Be sure that you follow all steps.
I don't see the the model in those pictures... select the .dll once again.
In the second picture, in the pink part ,on the top, where is "MODEL" should be "X3" and you don't have nothing there...
Take a look at the video here:
http://xdaforums.com/showpost.php?p=38838927&postcount=7
---------- Post added at 08:57 PM ---------- Previous post was at 08:56 PM ----------
Connection mode is not important, port selection is...
---------- Post added at 09:01 PM ---------- Previous post was at 08:57 PM ----------
I use win 7
Oops! I see that I forgot to intall the .msi ^^
but it's the same
What you need to flash kdz etc... is "msxml" and "windows enabler" too for kdz.
LGFlash Tool don't need "windows enabler".
I have win 8 64bit,
I install drivers
1) LGUnitedMobileDriver_S4981CAN36AP22_ML_WHQL_Ver_3[1].6.exe
2) LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3[1].6.exe
and install latest drivers for lg P880 LGUnitedMobileDriver_S4981MAN38AP22_ML_WHQL_Ver_3.8.1.exe (with latest drivers all went well)
without latest drivers for me not working.
I install drivers
1) LGUnitedMobileDriver_S4981CAN36AP22_ML_WHQL_Ver_3[1].6.exe
2) LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3[1].6.exe
and install latest drivers for lg P880 LGUnitedMobileDriver_S4981MAN38AP22_ML_WHQL_Ver_3.8.1.exe (with latest drivers all went well)
without latest drivers for me not working.
I already tried it and it's the same.
somehow your phone is not detected (model - missing, icons in left part of upper menu is grayout)...
driver is installed ok? selection of port41 is made in configuration of driver?
the phone display S/W Upgrade mode?
make all steps from beggining, make sure not forget one...
If you're with win7 you shouldn't have problems...
Sure that the .dz and .dll files are not corrupted?7
My advice is to download all the files and restart the entire procedure.
But before, try to restart your computer and try to flash it again.
Good luck!
STOP!
Before you follow this guide, look at this:
http://xdaforums.com/showthread.php?p=38876171
:good:
Before you follow this guide, look at this:
http://xdaforums.com/showthread.php?p=38876171
:good:
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82Rollback Optimus 4X HD from 4.1.2 JellyBean to 4.0.3 Stock ICS in this case V10H
Videotutorial: http://www.youtube.com/watch?v=NDyZ8pH2jp0
1st: U need are the files that you get here: LG FlashTool and Accessories
2nd: Install the LGUnitedMobileDriver (first LGUnitedMobileDriver_S4981CAN36AP22_ML_WHQL_Ver_3[1].6 & 2nd LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3[1].6)
3: Turn Off your Mobile and remove your SD and Sim-Card
4: Press volumen down and put in your USB-Cable
5: When your computer detect, it installs the driver
6: After Driver installation, go to device manager select “LGE CDMA USB SERIAL PORT” right click properties then connection setting advanced and set to “com41″
7: After that run LG FlashTool
8: Select in DLL the x3_2008_v0.0.6.9.dll
9: In S/W select only the LGP880.dz file that i´ve added in dz and dll file folder
10: In Action Mode select Upgrade DL
11: in Connection Mode select USB
12: Click on OK
13: Click on Port COM settings (COM plug icon) and select 1 ( Unmark the numbers above )
14: Click start(The Port 1 window should appear READY)
15: Disconnects USB cable and wait 5 seconds
16: Press and hold voll down button in Lg P880 and connect USB cable
17: The update process will begin automatically after that release the Vol down
18: When the progress reaches 100%, the mobile will power on and boots automatically into ICS!
19: Congratulation you did it
20: Now u can Flash v20a again
hopfully that helps to rollback for those they want.
a thanks would be great
dont forget to thanks xavierleonelbr from his guide i´ve get some parts
Some other DZ-Files to flash with LG-Flashtool:
LGP880AT-00-V10a-EUR-XXX-MAY-23-2012
LGP880AT-00-V10b-262-000-Jun-11-2012
LGP880AT-00-V10d-EUR-XXX-JUL-16-2012
LGP880AT-00-V20a-EUR-XXX-MAR-04-2013
LGP880AT-00-V20a-BUM-XXX-MAR-05-2013 CN
LGP880AT-00-V20a-262-000-MAR-26-2013 ADEUBK
Warning and notes:
Do not forget backup your apps, pictures, contacts etc. Flash with LGFlashTool will erase all data on the phone!
Disable Windows Enabler when its running from a season before with the KDZ-Update-tool! It wouldnt work!
Be sure you have the propper driver instaled and chosed the right options in the comport settings!
40Easyest way...
To go back to previous firmware (ICS V10x_00) with LGFlash Tool there is no need to invent in device properties
or others...
The same methode can be used to do a clean install of the V20A, or other...
Internal memory will be wiped !!!
Be sure that you have the latest drivers installed:
http://www.4shared.com/file/rPpP2btT/LGUnitedMobileDriver_S4981MAN3.html
http://www.4shared.com/file/ZSMf2x6n/LGUSBModemDriver_Eng_WHQL_Ver_.html
kdz-update: (updated 08-09-2015)
http://www.4shared.com/rar/mo5bLPRcce/kdz-udpate.htmll
install "msxml" (its inside the "kdz-update" folder).
run windows enabler and turn it ON
With battery on the phone and the phone off, press "VOL-" and connect the phone
to the computer while pressing, you'll be in S/W. (If you have issues due the device
being recognized while in S/W Mode, disconnect from PC, take out the battery and
put it back again on the phone, try again "Vol- & connect to PC", wait a few seconds
for Windows to recognize the device).
Run "LGFlashTool" (its inside the "kdz-upload" folder).
select the .dz and the .dll
Official euro_open V20A_00 .dz and .dll:
LGP880AT-00-V20a-262-000-MAR-26-2013+0
http://www.4shared.com/rar/i5muvxCb/LGP880AT-00-V20a-262-000-MAR-2.html
Official euro_open V10H_00 .dz and .dll:
http://www.4shared.com/rar/LruGBo2Z/V10H_00_dzdll.html
View attachment 1784755
Go to "port settings" and select all 16 ports.
View attachment 1784756
Start the upgrade clicking in the yellow arrow on the top/left of the program window.
Three (3) ports will look like comunicating (in the next image you'll see only two cause I'm not really flashing), but
only one is the right one. Two of them will stay stucked in x% and a third port will go higher. Memorize the one that goes higher cause is that one.
In my case, this time was the nr. 3.
View attachment 1784757
Close the program and re-start it. This time, go to "port settings" and select only the port that you memorized,
start the upgrade and you just need to wait for the phone to reboot.
In case of that port fails, choose one of the other two untill you hit the good one.
If you don't see 3 ports, its something wrong and probably this won't work...
Easy
To set manually the port to "1", connect the phone in S/W Mode, open windows "Device Manager",
select “LGE CDMA USB Serial Port”, right click in "properties", connection settings advanced and set it to “com41″
Video added:
(select full screen and 1080p for better resolution)
Report if something doesn't work
This post was edited cause I realise that is not always the first port the right one, sorry...2
I don't believe that after 4 years people still have problems flashing this device.... I still have it, a damn good phone!!! I also have a g2 mini but lg 4x is much better looking and it might sound weird but, after bloatware being uninstalled 4X HD is faster
I still flash my phone like I always did. See http://xdaforums.com/showpost.php?p=38838927&postcount=7
Sometimes, mostly after I reinstall my windows, I need more time for the phone (all the hardware) be recognized and drivers be installed, but apart of that I never had problems. Just need to click on the icon when windows shows that detected a device and wait until see all the hardware with a green mark. Only after that is possible to proceed.
If someone have a problem following my method, I thing that the drivers are not the correct ones, or the cable is not good, or some other problem with the computer.
All the files and programs are provided to download on the link above, soo...
If you're having problems with this device, never try to root a LG2 mini. That's a real headache!!! :silly:
Good luck to all and keep calm, no rush!!!
Best regards,
RuedasLocas2SnXo
Thank you for the instructions. I managed to downgrade to v10 and upgrade to v20 using your method.
However, the LG Flash Tool needs to be run as an Adminstrator, otherwise it would not work. I found out the hard way. May be you can consider adding this to your instructions as more people will be using Windows 7 and Windows 8 which would be a problem.
Cheers!2Turtorial
I´ve made a smal Videotorturial for this thread.
http://www.youtube.com/watch?v=NDyZ8pH2jp0
greetings
by SnXo
P.S: Thanks RuedasLocas for your notes
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