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[GUIDE] Unbricking/Unrooting/Returning to Stock Optimus M[KDZ]

Discussion in 'Android Devices' started by sammyz, Dec 20, 2012.

  1. sammyz

    sammyz LG Whiz Kid
    Thread Starter

    Ok first things first. This will only fix certain bricks. If after factory resetting with recovery and following this unbrick guide you can't get your phone to work, try this guide: http://androidforums.com/optimus-m-all-things-root/364080-unbrick-phone-lg-screen.html

    The first thing you have to do is download and install the Optimus M drivers from here if you haven't installed them already.

    The second thing you will have to do is download the CAB to KDZ converter and KDZ flasher from here: KDZ_FW_UPD_EN.zip

    Next is to get the firmware cab file: MS690ZV7_08.S7_08.P3018.cab

    Now turn off your phone (pull battery if need be), and leave it unplugged
    Go into download mode (aka emergency mode) by following this:
    Hold back key+down key and plug in USB chord.

    Now you are ready to flash your phone

    These are the instructions to convert the cab to a KDZ and flashing it:
    1. Install msxml.msi
    2. Disable antivirus software
    3. Open UpTestEX_mod2_marwin.exe
    4. Wait for the program to open
    5. Look for "Encrypt cab file to kdz file"
    6. Click the folder icon
    7. Choose the location of the cab you downloaded for the firmware
    8. Encrypt cab -> kdz Program will freeze up. DO NOT EXIT until program says Done!!! Otherwise it won't finish converting.
    9. Close program
    10. Open KDZ_FW_UPD.exe
    11. "Type" choose CDMA
    12. Choose in "Phonemode": Emergency
    13. Click the folder icon and choose the kdz file that UpTestEX_mod2_marwin.exe just made.
    14. Click Launch software update, wait awhile for it to flash and then boot, and enjoy!

    If it bootloops still, try to factory reset (while phone is off, hold volume down+home key+power).
    If that does not work, use joneidy's unbrick guide showed at the beginning of this thread. If you do that guide you will have to reprogram your MEID/MIN/MDN and flash the PRL. This guide will not erase any of the phone's programming but sometimes fails in certain cases of brick. LGNPST from joneidy's guide is a PITA to install sometimes, so I made this to not replace his guide, but post a method that will work most of the time and be less of a PITA to get the phone back in working order.
     


    #1 sammyz, Dec 20, 2012
    Spec2nirvash, macjay420, mill3rkydd and 1 other person like this.

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  2. mill3rkydd

    mill3rkydd Well-Known Member

    Thank you for making a guide for this!! Now I can give my mom this phone!!
     
    #2 mill3rkydd, Dec 23, 2012
  3. macjay420

    macjay420 Android Enthusiast

    worked perfect thanx
     
    #3 macjay420, Dec 27, 2012
  4. mrdude5660

    mrdude5660 Newbie

    the firmware link is broken!!
     
    #4 mrdude5660, Jan 27, 2013
  5. sammyz

    sammyz LG Whiz Kid
    Thread Starter

    Dont you have an optimus m plus :thinking:

    And yea, LG removed the firmware...
    Will upload tomorrow, sorry can't today.
     
    #5 sammyz, Jan 27, 2013
  6. sammyz

    sammyz LG Whiz Kid
    Thread Starter

    Fixed firmware link.
     
    #6 sammyz, Jan 29, 2013
  7. Spec2nirvash

    Spec2nirvash  
    VIP Member

    Worked great! Thank you sammyz! PS-- I had to set phone mode to CS_EMERGENCY for the update to work!! :D :D
     
    #7 Spec2nirvash, Feb 14, 2013
    sammyz likes this.
  8. jaymixvp

    jaymixvp Lurker

    when i press Encrypt cab -> kdz it just opens up my file explore and also it wont let me extract MS690ZV7_08.S7_08.P3018 i redownloaded it over and over to try again but.. wont work ...
     
    #8 jaymixvp, Jun 19, 2013
  9. jaymixvp

    jaymixvp Lurker

    WAIT i think i did it but im not sure, now my phone just boots up straight into the s/w upgrade mode, what now?
     
    #9 jaymixvp, Jun 19, 2013
  10. jaymixvp

    jaymixvp Lurker

    i tried it again and it shows this, [R&D Test Tools Log File]

    13:26:48 : Launching SW update
    13:26:48 : Unpacking KDZ
    13:26:49 : KDZ file extraced
    13:26:50 : Files were extracted.
    13:26:50 : LGMobileDL Load.
    13:26:50 : Port = -1
    13:26:50 : Connecting to phone
    13:26:59 : Check Phone mode = 2
    13:27:06 : Phone type check.......
    13:27:06 : LGMobileDL.DLL Loading....
    13:27:06 : _SetAuthMark Ok : wAuthMark(22181)
    13:27:06 : _DetachDLL Call
    13:27:06 : _DetachDLL Call End
    13:27:06 : Param : Path = C:\ProgramData\LGMOBILEAX\Phone\MS690ZV7_08.S7_08.P3018.wdb
    13:27:06 : Param : moduleDir =
    13:27:06 : Param : waitTime = 33000
    13:27:06 : Param : UsbHighSpeed = 0
    13:27:06 : Param : PhoneMode = 2
    13:27:06 : Param : BinVersion = MS690ZV7_08.S7_08.P3018
    13:27:06 : Param : AuthMark = 22181
    13:27:06 : Call fn_StartUpgrade
    13:27:07 : CDMA: wParam = 20, lParam = 420
    13:27:07 : Model Dll Msg Not Found(20, 420)
    13:27:11 : CDMA: wParam = 6, lParam = 0
    13:27:11 : Step : Main Binary Flash Erase
    13:27:11 : CDMA: wParam = 7, lParam = 1
    13:27:11 : Step : Flash Burning(SDRAM to FLASH)
    13:27:11 : CDMA: wParam = 7, lParam = 0
    13:27:14 : CDMA: wParam = 7, lParam = 1
    13:27:16 : CDMA: wParam = 7, lParam = 2
    13:27:19 : CDMA: wParam = 7, lParam = 3
    13:27:21 : CDMA: wParam = 7, lParam = 4
    13:27:24 : CDMA: wParam = 7, lParam = 5
    13:27:26 : CDMA: wParam = 7, lParam = 6
     
    #10 jaymixvp, Jun 19, 2013
  11. jaymixvp

    jaymixvp Lurker

    WAIT i tried it again , now it goes to the part where it says you need charge, so i will just wait and see what happens.
     
    #11 jaymixvp, Jun 19, 2013
  12. sammyz

    sammyz LG Whiz Kid
    Thread Starter

    Working now?
     
    #12 sammyz, Jun 19, 2013
    jaymixvp likes this.
  13. jaymixvp

    jaymixvp Lurker

    yes it works thanks very much sam
     
    #13 jaymixvp, Jun 20, 2013
  14. cwac12

    cwac12 Newbie

    ok so the only reason I did this was to fix my data probs from a rom I installed. but my data still doesn't work. I used a program to update the prl and it updated it but it still wont find data. my bars just say x.
     
    #14 cwac12, Oct 19, 2013
  15. sammyz

    sammyz LG Whiz Kid
    Thread Starter

    Stay on stock, don't root, ask metro why. Usually they'll help fix it for free. If it's a hardware problem, you'll have to get a new phone.
     
    #15 sammyz, Oct 20, 2013
  16. palswim

    palswim Lurker

    #16 palswim, Mar 26, 2015
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