Root Unbrick/Unroot LG Optimus F7 (Boost Mobile)

[sammyz]

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

Phones Don't fix themselves
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[sortoh85]

Download mode is by the volume + after plug-in in the use, when phone is off, don't use the power button

 

[rpdrizzy]

Where's the firmware?

 

[sammyz]

Where's the firmware?

Just finished uploading it

 

[rpdrizzy]

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

 

[sammyz]

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

That's usually normal

 

[Rocket Music]

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

 

[Rocket Music]

It finally worked with version LG Flash Tool 1.4.1.330R

 

[sortoh85]

i dont know what iam doing wrong after i switch the port to com1 it stays there and it will not witch to come41....

 

[rpdrizzy]

i dont know what iam doing wrong after i switch the port to com1 it stays there and it will not witch to come41....

I made the same mistake. You have to switch it to com41 and not com1.

 

[sortoh85]

ok, i thought i was along on the forum and had to wait till later tonight to get a replay, thanks let me try

 

[sortoh85]

that did it but it starts and fails after 9 sec

 

[rpdrizzy]

that did it but it starts and fails after 9 sec

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

 

[sortoh85]

ok got it, just had to "c" the 1st fail and it retrys....i am back

 

[rreoken]

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

 

[rpdrizzy]

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

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.

 

[rreoken]

I installed megalock into the LG folder but it says the code is not detected.

 

[sortoh85]

Did u delete the one that was there already

 

[rreoken]

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

 

[sammyz]

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.

Nope. Megalock is included in the lg flash tool zip....

 

[rreoken]

I wonder why megalock is not being detected then?

 

[sammyz]

I wonder why megalock is not being detected then?

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

 

[Rocket Music]

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.

 

[sammyz]

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.

Factory reset.

 

[Rocket Music]

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