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Root How to downgrade & recover your LG Venice

Discussion in 'Android Devices' started by thermalpaste, May 1, 2013.

  1. thermalpaste

    thermalpaste Newbie
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    Hello all I have successfully downgraded my LG Venice from LG730ZV6 to LG730ZV5 to gain root access again by using Bin4ry's exploit. This tutorial will also unbrick a soft bricked phone. WARNING: If you do something wrong, you can hard brick your phone. I take no responsibility if your mess up your phone in the process. Special thanks to androidlover @ rootzwiki i used his tutorial and edited it to work with the venice.

    Tools & files you will need:
    1.KP500 tool
    2.LG730ZV5.CAB file or LG730ZV8.CAB file
    3.LG Mobile Support Tool (internet connection needed for tool to work) & LG drivers

    Instructions:
    1.Install LG Mobile Support Tool & drivers
    2.Extract the KP500 tool into a directory (i.e. C:\LG_Tools)
    3.Move the .cab file into the same directory
    4.Power off your device
    5.With your device off hold down the vol up + vol down
    6.Plug in the usb cable while holding both buttons your device should now be in download mode.
    7.Run KP500-Utils-EN.exe as administrator
    8.You will get a list of options choose I "Flash with assistance (file .cab) enter the letter I
    9.Enter the Phone Model = LG730
    10.Input the full path to your cab file including .CAB at the end (i.e. C:\LG_Tools\LG730ZV5_01.S5_00.P61009.CAB)
    11.Input the full file name of your cab without the .CAB at the end (i.e. LG730ZV5_01.S5_00.P61009)
    12.Watch as the LG update tool pops up. It will most likely tell you that your phone is disconnected. This is normal and to be expected just click restart.It will find your phone and go thru extracting the cab file and then extracting a .bin file.At this point if you did something wrong with driver setup you will get a page error. If you did it right, you will get a percentage indicator that goes past 15%. Every so often a message will go by about "model dll message not found". This is normal.
    13.Wait for your phone to finish flashing and let it reboot on its own. if stuck on a boot loop do a factory restore after flashing. Enjoy the fact that you can now recover your phone if you do something wrong (in most cases)
     

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    Slikno420, Philip44, FieroGT and 4 others like this.
  2. likecookies

    likecookies Newbie
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    Very cool thermalpaste
     
  3. closter

    closter Lurker
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    hi i just ran everything succesfully but am still just getting a flashing lg logo... and suggestions?
     
  4. thermalpaste

    thermalpaste Newbie
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    im guessing you are trying to recover your phone. if so is your device soft bricked because this tutorial wont restore a hard bricked phone? and when then flash completed did it automatically restart your phone?
     
  5. closter

    closter Lurker
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    it turns on but only to the lg logo then resets and starts over,i'm assuming thats soft bricked. It started doing it when i tried to put it into download mode without it being plugged in and yes it attempted to reset but only to the lg logo loop again.
     
  6. thermalpaste

    thermalpaste Newbie
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    when you press and hold the up & down vol. buttons your phone needs to be off .while holding both those buttons your phone should not turn on until you have connected the usb cable from your phone to your computer once you have done that a download screen with a refresh icon will appear on the display of your phone. did you ever get that display?
     
  7. closter

    closter Lurker
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    yes i got that screen and the program ran succesfully. I only tried this method after being caught in boot loop by pressing the power button with the volume keys depressed.
     
  8. thermalpaste

    thermalpaste Newbie
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    if you did successfully flashed the firmware this should have recovered your phone if it was softbricked. try to do a factory restore by turning off your phone and than hold the home button, down vol. button and power button all at the same time until you get to the restore screen. once on that screen just press the power button to confirm the restore.
     
  9. royalty

    royalty Newbie
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    I've tried this three times and got the same error each time. It says "updating is not possible any longer due to a fatal error while the LG Mobile Phone software update"

    09:36:28 : [C:\LGMobileUpgrade]
     
  10. MommasDroid

    MommasDroid Newbie
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    Unpaid EVERYTHING!
    Michigan and currently trying to escape. I HATE M
    Now that my seemingly never-ending search has ended :), I will see if I can do it. Though not done, I'm glad I found something because what I came across could have bricked a perfectly brand new phone and the person who made the video should be banned from YouTube!!!
     
  11. KiwiHoney

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    Hey guys im a new android user i have that lg venice v6 and im beyond disgusted with this root non sense the only reason I'm trying is because my dumb phone erased files i really want back and the root crap is the only way to do it but nothing works and im afraid to ruin my phone ....PLEASE HELP any advice will be GREATLY APPRECIATED ;-(
     
  12. kreugerxbear

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    I Cannot seem to get the percent indicator to go past 30% am i doing something wrong??
     
  13. likecookies

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    Make sure your drivers are installed and working for the phone.
     
  14. mcmillian007

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    Im confussed about steps 10 and 11 could you make a video please
     
  15. likecookies

    likecookies Newbie
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    10.Input the full path to your cab file including .CAB at the end (i.e. C:\LG_Tools\LG730ZV5_01.S5_00.P61009.CAB)

    After you type LG730 and hit enter all you have to do is type C:\LG_Tools\LG730ZV5_01.S5_00.P61009.CAB hit enter.
    if you followed step 3 then it should be fine.

    11.Input the full file name of your cab without the .CAB at the end (i.e. LG730ZV5_01.S5_00.P61009)

    Again just type LG730ZV5_01.S5_00.P61009 and hit enter.
    and continue with steps 12 & 13.
     
  16. c3ser

    c3ser Newbie
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    um when you open the cab file rar folder is an error suppose to pop up ?
     
  17. Nooski

    Nooski Android Enthusiast
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    KP500 link is dead.
     
  18. c3ser

    c3ser Newbie
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    I keep getting the fatal error, this is really starting to frustrate me, haven't found an answer to this.
     
  19. superkingtsob

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    SO i did every thign above and all foen dose is flash the lg logo

    06:37:41 : [C:\LGMobileUpgrade]
     
  20. JJPR97

    JJPR97 Well-Known Member
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    Fatal error, what were you trying to do before this happened? What have you done to try to fix it so far?

     
  21. superkingtsob

    superkingtsob Lurker
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    No i could get into download mode but that was it. Now the phone wont even power on or take a charge
     
  22. JJPR97

    JJPR97 Well-Known Member
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    So it won't power on to any mode or charge? Sounds like a hard brick.
     
  23. superkingtsob

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  24. jporterweb

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    So no matter what method I use to try and downgrade to V5, I get stuck in a boot loop. I can't do a factory reset or anything. The only thing I can do is go back to V8. So I'm stuck without root. Any ideas? I've used this method and the other method making a .kdz. Both methods stick me with a boot loop at the LG Logo.
     
  25. c3ser

    c3ser Newbie
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    i tried to downgrade my phone so that i can install the root, but i keep getting the fatal error when i reach the loading bar.
     
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