[UNBRICK] Using official LG firmware VM & Sprint


  1. HaTrEd360

    HaTrEd360 Well-Known Member

    This is an unbrick method for us VM users finally you guys can go and screw up your phones intentionally and, messing with our bootloaders and recoveries will be a lot easier and what not now! Credit goes to Sammyz for providing the firmware, I'm nearly sharing Sammyz content. :D

    We need a tester that wants to try it out as we haven't found one yet.. Anyone have a bricked F3 they want to try and fix? Or one they just want to reflash back to stock for some reason? It is the official VM firmware, and the original thread can be found in the MetroPCS section of the Optimus F3 if you'd like to look.

    This .cab file does need to be converted to a .kdz and then flashed the same way you would on the LG Motion. (I'm sure an easy Google search can solve those problems for you.)

    I'm gonna ask if Sammyz can go ahead and convert it to a .kdz for us tho. Then I'll post a guide! My very first one lol


    I TAKE NO RESPONSIBILITY FOR ANY PROBLEMS THAT ARISE DURING THE PROCESS. I myself don't have a bricked F3 to try it. Maybe someday. :p

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    JrossiX likes this.
  2. JrossiX

    JrossiX Well-Known Member

    imma do it right now bro....well i'll eat some breakfast first,ok. will post as soon as its done.






    i even went and got myself in a bootloop using animod.


    i already downloaded VM kdz and Tmob...imma flash both but ill do VM first
  3. sammyz

    sammyz LG Whiz Kid Guide

    Do not flash tmobile firmware....it is a GSM phone. Your F3 is a CDMA phone...you MIGHT screw up your radio.

    @OP this firmware is for sprint as well ;)
  4. elgecko

    elgecko Well-Known Member

    let the experiments begin... LOL
  5. sammyz

    sammyz LG Whiz Kid Guide

    Anyone got it to flash yet? If not, I have another way to flash, but please, no one flash the metro/tmobile firmware because if this firmware cannot flash the usual way, you will not be able to ever get back onto VM/Sprint fw and your phone will be screwed.
  6. JrossiX

    JrossiX Well-Known Member

    I couldn't get the ls720 firmware to flash it kills the upgrade right when its about to update...also don't pull the plug while kdz tool is updating ...I put my phone on edge of desk it fell off and now phone is toast ...some programs can pick it up but for the most part ...error no USB device....
  7. TNSmokey98

    TNSmokey98 Active Member

    Sorry to hear about that. I'm really hoping this will work with a few more tweaks as I'm looking for this to work and for a custom recovery before I root.
  8. sammyz

    sammyz LG Whiz Kid Guide

    What programs? What comes up on device manager when you plug it in?
  9. JrossiX

    JrossiX Well-Known Member

    Clockworkmod touch works it like lte2initrecovery.apk first time I used it freak in awesome ui...6031 I think.
  10. JrossiX

    JrossiX Well-Known Member

    I think wugs nexus root tool kit...if I'm not mistaken also I tried the take battery out hold vol+ plug USB ...then my screen on laptop says I need Microsoft media format 11 so I Google find out its windows SDK...dloaded and waiting to load



    BTW i m in Qualcomm USB mode I guess the hboot is damaged but its not unfixable ...I think.
  11. noxiousfix

    noxiousfix Member

    Why am I having trouble putting this into emergency mode. Pwr+vol up+vol dwn. Takes me into Factory Hard Reset.
  12. JrossiX

    JrossiX Well-Known Member

    i was having same issue ...battery out then in vol+ & power.i usually have usb plugged in.if you get in emergency mode your good.
    noxiousfix likes this.
  13. noxiousfix

    noxiousfix Member

    JrossiX likes this.
  14. SwoRNLeaDejZ

    SwoRNLeaDejZ Well-Known Member Contributor

    It's worth mentioning that the update might stall and reboot your phone at around 80% DO NOT UNPLUG IT let it finish
  15. noxiousfix

    noxiousfix Member

    anyone else receive the following error?
    Launching S/W update
    Unpacking KDZ
    kdz decrypt error.
    Extract file error
    ===FINISHED===

    *UPDATED*
    ok, did some reading here and found out that there is some sort of problem with the .cab and that sucks because it took forever to find it. that being said, does anyone have the .kdz file made from the .cab? I would greatly appreciate it. I would love to just skip that step altogether :)
  16. JrossiX

    JrossiX Well-Known Member

    dude i was haveing this happen all weekend...on a different cpu at my parents house couldnt get more than 20mb of any file downloaded...drove me nuts.apparently but dont quote me on this its a microsoft issue with windows...doesnt affect everybody. well im downloading the .cab file now let me know if you still need the kdz
    noxiousfix likes this.
  17. noxiousfix

    noxiousfix Member

    Yeah, if you don't mind. I'd appreciate it. I've tried everything!
    Thanks bro
  18. sammyz

    sammyz LG Whiz Kid Guide

  19. millar43068

    millar43068 Well-Known Member

    [​IMG]

    my results the first time i tried it it said s/w upgrading do not unplug with a green icon then I switched usb cords because I was using one for my google chrome and when i did the vol+ and power button combination i got download mode...

    [​IMG]
    once i switched usb cords and got windows too recognize it i did get into download mode with the white box and red text. but then kdz_fw_upd crashes once it unpacks the kdz file and then I clicked read phone information and got this...

    EDIT
    [​IMG]

    i get different results everytime doing the same thing always ending with the update tool crashing

    yo
  20. sammyz

    sammyz LG Whiz Kid Guide

    If you flashed the metropcs/TMobile firmware, there is no easy way back to getting back onto virgin mobile/sprint fw.

    With that said, DO NOT FLASH METRO/TMOBILE FW TO UNBRICK YOUR PHONE. The method to unbrick the VM/Sprint phone (once I create the method) will not flash a phone thats on the wrong fw.
    millar43068 likes this.
  21. millar43068

    millar43068 Well-Known Member

    I didn't lemme know if you need help testing or anything ive switched back to my old phone for the time being
    sammyz likes this.
  22. JrossiX

    JrossiX Well-Known Member

    Hey bro sorry I didn't get back to you... got arrested... just got out.... :cool:...nehoo... still bricked... I miss my f3
  23. sammyz

    sammyz LG Whiz Kid Guide

    Yea, I have to ask someone ik to help you, and for him to help you, he needs someone else with a working f3 from vm/Sprint
  24. pritamcharan

    pritamcharan New Member

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