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Root Unbrick/Unroot LG Optimus F7 (Boost Mobile)

Discussion in 'Android Devices' started by sammyz, Aug 4, 2013.

  1. sammyz

    sammyz LG Whiz Kid
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    Ok, this phone does not unbrick the same way as most other LG phones will.

    You will need:
    Drivers installed- https://www.box.com/shared/32c5t7fj2w8xcwr0krjo
    LG Firmware: www.oudhitsquad.com/android/LGE/Firmware/LG870/LG870ZV4_06.zip
    LG Flash Tool (read the Readme!): Flash Tool Setup
    LG DLL for LG Flash Tool: https://www.mediafire.com/?tnda5my51o6gq76 - thanks to rally 517 for sharing his copy

    Alternative Link:
    This has everything above in one zip file:
    http://osp.zerounix.net/lg870-flashtools.zip
    Thanks to tryptaminion

    This guide is intended for windows users. There is no way to unbrick this phone unless you are on windows due to the software being used for flashing only made for windows.

    1. Put your LG in download mode:
      While powered off, volume up + plug in USB (thanks sortoh85). Connect a trustworthy USB cable
    2. Open up LG Flash Tool
    3. Tick "Select Manual Mode"
    4. The DLL selected is called "LG870_20130528_LGFLASHv151.dll", find where you extracted that to
    5. Select Add, choose the tot file you downloaded.
    6. Press ok.
    7. Read instructions here on how to configure the COM Port and flash: LG Flash Tool - Free - no need B2B User/Pass - GSM-Forum

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  2. sortoh85

    sortoh85 Well-Known Member
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    Download mode is by the volume + after plug-in in the use, when phone is off, don't use the power button
     
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  3. rpdrizzy

    rpdrizzy Member
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    Where's the firmware?
     
  4. sammyz

    sammyz LG Whiz Kid
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    Just finished uploading it :p
     
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  5. rpdrizzy

    rpdrizzy Member
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    Thanks I have managed to unbrick my device despite it failing at 86%. Thanks for your work.
     
  6. sammyz

    sammyz LG Whiz Kid
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    That's usually normal :p
     
  7. Rocket Music

    Rocket Music Newbie
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    I currently need help asap. I did everything that the guide says and also what the guide for the configuration of the ports. But I'm stuck where it just says ready. I really need this because I removed apps and I cant acces my lockscreen and also my home button stop working. Please I need an answer, I would highly appreciate it. I'm in panic mode right now
     
  8. Rocket Music

    Rocket Music Newbie
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    It finally worked with version LG Flash Tool 1.4.1.330R
     
  9. sortoh85

    sortoh85 Well-Known Member
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    i dont know what iam doing wrong after i switch the port to com1 it stays there and it will not witch to come41....
     
  10. rpdrizzy

    rpdrizzy Member
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    I made the same mistake. You have to switch it to com41 and not com1.
     
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  11. sortoh85

    sortoh85 Well-Known Member
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    ok, i thought i was along on the forum and had to wait till later tonight to get a replay, thanks let me try
     
  12. sortoh85

    sortoh85 Well-Known Member
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    that did it but it starts and fails after 9 sec
     
  13. rpdrizzy

    rpdrizzy Member
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    Keep trying make sure you have all the correct files and the latest LG Flash Tool.
     
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  14. sortoh85

    sortoh85 Well-Known Member
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    ok got it, just had to "c" the 1st fail and it retrys....i am back
     
  15. rreoken

    rreoken Newbie
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    It keeps asking me for a user name and password. What did I do wrong?
     
  16. rpdrizzy

    rpdrizzy Member
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    You need to download the MegaLock from the last link Sammyz posted in the tutorial (step 7). You'll have to register on the site though.
     
  17. rreoken

    rreoken Newbie
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    I installed megalock into the LG folder but it says the code is not detected.
     
  18. sortoh85

    sortoh85 Well-Known Member
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    Did u delete the one that was there already
     
  19. rreoken

    rreoken Newbie
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    I tried leaving it and taking it out and it continues to ask for a parallel key of some sort.
     
  20. sammyz

    sammyz LG Whiz Kid
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    Nope. Megalock is included in the lg flash tool zip....
     
  21. rreoken

    rreoken Newbie
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    I wonder why megalock is not being detected then?:mad:
     
  22. sammyz

    sammyz LG Whiz Kid
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    megalock is just a cracked dll so that you can get into the program. Without it, you'd need an LG username and password.
     
  23. Rocket Music

    Rocket Music Newbie
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    I'm having issues with my GPS. I've restored the phone and I haven't removed anything, but now I don't get a gps lock. I would appreciate a response because I use the gps a lot. Thanks.
     
  24. sammyz

    sammyz LG Whiz Kid
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    Factory reset.
     
  25. Rocket Music

    Rocket Music Newbie
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    I've already done that through the recovery and also through the backup and reset on the phone but I haven't had a success with the gps feature. I've been trying to look for the gps tweaks that Exit_Only had but I guess he removed them, and also we need a working recovery. http://forum.xda-developers.com/showthread.php?t=2158329
     

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