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Root Unbrick/Unroot LG Optimus F7 (Boost Mobile)

The part about it changing to port 1 is outdated. That shouldn't happen so, once you set it to 41, it should stay 41. Every other step is the same though. I say try double checking LG Flash Tool. I'll do a newer instruction set if you want.

it probably wouldnt hurt. I downloaded everything at the beginning and couldnt get megalock to work for me but changed the date in my pc like I seen on anothet thread. Could that be the problem maybe?
 
it probably wouldnt hurt. I downloaded everything at the beginning and couldnt get megalock to work for me but changed the date in my pc like I seen on anothet thread. Could that be the problem maybe?

You definitely shouldn't have to change the date on your PC. I'll make a new walk through tonight. I'd do it right now but, I had a long day & need a nap.
 
You definitely shouldn't have to change the date on your PC. I'll make a new walk through tonight. I'd do it right now but, I had a long day & need a nap.
You definitely shouldn't have to change the date on your PC. I'll make a new walk through tonight. I'd do it right now but, I had a long day & need a nap.
Thanks man I appreciate any help I can get at this moment. You have a good one now.
 
I made this rough draft because you seem to know the lesser details but, if you need more detailed steps let me know. I currently don't have any screen recording software installed but, I'll install some if needed.


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With that, are you Windows or are you running Wine through Linux? Also, let us know the version of OS you're running. Where did you store your files? If you have them installed in the LG Flash Tool installation folder or directly on the C:\ drive, Windows security may be blocking access to the files. If that's the case, simply move the files to the Desktop or say your Documents folder.

When you plug your phone in on Download Mode, you'll hear Windows, if that's the OS you're running, make a sound indicating a device has been connected. Make sure your volume isn't muted as hearing that sound is a good way to make sure everything is connected and Windows recognizes a device has been connected. In Device Manager you should see an item called Ports (COM & LPT) in the list. Under that category you should see the LGE AndroidNet USB Serial Port (COM 41). Now what happens is, that Ports (COM & LPT) item may disappear from the list in a few seconds then come back in a few seconds. This should happen indefinitely for as long as you have the phone plugged in. This is normal behavior as the computer doesn't see the device as having a "true function" so, it continuously refreshes trying to find more information on the device. This happens every time in Windows 8.1 as it's a newer feature not fully deployed in Windows 7. So, with that, if you are running a Windows based OS older than Windows 8.1, you may need to Show Hidden Devices in Device Manager & hit refresh a few times if the Ports (COM & LPT) item disappears and doesn't reappear in the list. When you hit the start button on LG Flash Tool, you may have it at a time when Windows didn't have the Ports (COM & LPT) item listed, meaning LG Flash Tool can't work with a device Windows isn't recognizing at the moment.

Lastly, the latest USB driver for this phone is LGUnitedMobileDriver_S52MAN314AP22_ML_WHQL_Ver_3.14.1.exe located here http://tool.xcdn.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425 so, make sure you have the latest USB driver installed. After that, you still have to use the phone to install the rest of the drivers.

1) Turn the phone off and plug it in. Drivers may need to install.
2) Turn the phone back on & turn on USB Debugging & Unknown Sources. Drivers may need to install.
3) Put the phone in download mode. Drivers may need to install.

After taking those steps, all necessary drivers should be installed. Then try the flashing process again.
 
I cant put my phone on download mode, my PC recognizes it has Qualcomm HS-USB QDLoader 9008, because i installed the driver, otherwise i would get USB QHSUSB_DLOAD has a none driver installed. Is there any solution? PLEASE!!
 
Sounds like you been messing around with your partitions. This phone unfortunately doesn't get a lot of shine. I'd recommend you PM other members here who seem more knowledgeable & check other forums as well such as http://forum.xda-developers.com/
 
I tried to install P87020d_00.kdz on my LG Optimus F7 Boost mobile, but it seems i f*cked up, i tried to install the firmware via LG tool legit, but after the firmware was downloaded, the same was deleted, and nothing happened, didnt even tried to install it on my phone, after that i tried to install "LG870ZV5_02.S5_02.P33030" on it, but it failed, since i couldnt put it on download mode anymore. :(.


Also tried this Guide, but like the phone doesnt even start on download mode, only on QDloader, it seems when i hitted the arrow, after that, nothing happened, it just said "Ready", and nothing seemed to be loaded on the phone.
 
Yeah, that was the problem. There is only a modded stock ROM for this phone & even that's not finished product. The only tool that will flash stock ROM to this phone is LG Flash Tool.

Never ever attempt to flash a ROM meant for a different phone to your phone.
 
What are your PC specs? Do you have the latest USB driver installed?
 
Making a nandroid backup of a stock ROM isn't always gonna work across different phones but, it isn't exactly necessary either. The purpose of a nandroid backup is really more so meant to be able to switch from different custom ROMs on the fly without having to re set-up your Google account etc. each time you want to use a different ROM. Nandroid backups can be used to return to a "clean" environment should anything go wrong but, the best way out of that is to simply just use LG Flash Tool to return to stock settings. Don't worry too much about backing up the ROM itself. Just use Titanium Backup to backup your user apps, WiFi Access Points and Wallpaper. I highly recommend buying the Titanium Backup Pro key as it will save you lots of headache. It currently costs $5.99 USD.

Watch this video first:


And then do finer searches for specific functions you want to learn how to use. There are other app backup applications but, none of them hold a candle to what Titanium Backup Pro can do. There are some free options out there though so, you can have a look at https://play.google.com/store/apps/details?id=mobi.infolife.appbackup for example. There's quite a bit of app backup applications in the Play Store these days so, do your research. The reason I said I highly recommend Titanium Backup Pro is because it does offer some more advanced features that other applications don't offer but, as a consumer, please do your own research first.


In closing, making a Nandroid backup
isn't 100% necessary especially if you aren't a power user and especially if you aren't going to be switching between ROMs frequently. There are only 3 ROMs for this phone: stock, modded stock and an unfinished Cyanogenmod ported ROM. So, you'll want to bet on just simply rooting the stock ROM and leaving it at that.
 
whenever i attempt to go into advanced port settings in the device manager it says i need certain rights i dont have to change it or something of that caliber...idk why it keeps saying that
 
whenever i attempt to go into advanced port settings in the device manager it says i need certain rights i dont have to change it or something of that caliber...idk why it keeps saying that

Make sure you have admin privileges.
 
yeah i was using admin account lol idk why it was saying that

Have you followed all of the instructions in it's entirety? It looks you're missing a few steps. I'll be the first to admit the OP needs to be updated badly but, I'll make a video later today if you are truly stumped.
 
Have you followed all of the instructions in it's entirety? It looks you're missing a few steps. I'll be the first to admit the OP needs to be updated badly but, I'll make a video later today if you are truly stumped.
that would help a lot! ive attempted to flash the firmware at least 5 times to no avail...
 
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