Root [TMobile] [GUIDE] How to unbrick/unroot (Complete Stock) Updated 11/20

[androidguy1991]

Hello everyone,

Edit:
Step 26 instead of putting your phone into EMERGENCY put it to CS_EMERGENCY

I can confirm 100% this will unbrick your device! I bricked my device today flashing stuff to test and anyways I flashed this and this completely unbricked my device! =D

I found a way to go back to complete stock unrooted!
This will also unbrick your device if you ever get stuck at any point!
This took 5min to flash.
Also make sure your phone is 100% Charge, other wise things will go wrong.

Here is a complete Step by Step full detailed Guide with pictures:


1. Pull your battery out

2. Put it back in (Don't turn it on)

3. Hold volume + and plug in your phone into your PC

4. You will see your phone go right into "DOWNLOAD MODE"
View image: 2013 10 02 15 24 31 870

5. Download FLashTool and extract it anywhere

6. Click on "Windows Enabler"

7. On the bottum right where the times is. It will show 3 little blue and white sqares together.
View image: Capture

8. Double click on it and it will show "on"
View image: Capture2

8. Right Click on "UpTestEX"

9. Click "Properties"

19. GO to the "Compatibility Tab" at the top

20. Put a check under Compatibility Mode "Run this program in compatibility mod for:"

21. Click on the drop down list and select "Windows XP (Service Pack 3)

22. Place a check where it says "Run this program as an administrator" near the bottom
View image: Capture0

23. Click on "Apply" then "OK"

24. Double click on "UpTestEX" to open it

25. On the top right where it says Select Type. Click on the drop down and click on "3GQCT"

26. On the right of that where it says PhoneMode. Click on the drop down and click "CS_EMERGENCY"

Minimize this windows for now.

27. Download the D50010b 01.zip file
(DO NOT RENAME IT)

28. Maximize UpTestEX tool and click on "Select kdz file" on the right side where the little folder icon is and select the kdz file you downloaded
View image: Capture3

29. IMPORTANT:
Click on "Normal web upgrade test" at the bottom right.
(It is grayed out, kinda hard to see)

30. A new windows will pop up and click on "Upgrade Start"
(Do not click on anything else or the program will crash)
View image: Capture4
View image: Capture5

40. Click on the Country drop down and click "Different Country"

41. Under launguage Click on "English"
View image: Capture78

Then select "OK"
View image: Capture6

Let the program do its thing and it will say when its done!
View image: Capture8

Issues:
If the phone get stuck in a boot loop or stuck at LG screen!
Then pull out the battery
Put it back in, but don't power it on yet
Hold the volume - key and power the device on
This will boot into Factory Reset mode and follow the instructions.

Congrats You are now back to STOCK/UNBRICKED/UNROOTED!

This is a lot of info so if you get stuck feel free to comment below and I will try my best to help you guys out. God bless!

 

[DoktorSleepless]

Hi, I got to step 30 and when I clicked on "Upgrade Start", I got a message saying:

"Please install csmg b2c Client TOOL

Select Tool -> B2C Client Setup menu"

Any idea what it could be?

 

[DoktorSleepless]

I ended up following this guide.
[GUIDE] [UNBRICK][ROOT] FLASH Any LG Factory ROM (kdz) WITH OFFLINE FIX - xda-developers

Got it to work up to a point, but I got a "problem with communication between phone and computer" message and I can't go any further. =\

 

[DoktorSleepless]

So yup, I think I'm screwed. I tried it in Windows 8, Windows 7, and Windows XP. No difference.

 

[DoktorSleepless]

So yup, I think I'm screwed. I tried it in Windows 8, Windows 7, and Windows XP. No difference.

 

[androidguy1991]

So yup, I think I'm screwed. I tried it in Windows 8, Windows 7, and Windows XP. No difference.

I even let the LG Support Tool connect online and update. It downloaded the rom directly from their server and even started installing until it got stuck at 4% same as offline. Then I got a similar message as offline.

Have you tried a hared reset? Hold the volume down while you turn the phone on and follow the instructions. That app you used is for ICS not JB?

 

[DoktorSleepless]

Nah, hard reset doesn't work.

That app you used is for ICS not JB?

One of the update descriptions say it improved 4.1 comparability I guess it works with JB as well. But I think the problem is that it was meant for Samsung phones.

I don't know why I used the app to be honest. I think I got it confused with something else.

 

[hugerichman]

If u have a metro service phone do NOT use flash tool it changes your service to t mobile cause now I'm stuck on t mobile wen I didn't even buy it from t mobile if u can help me with this problem it would be GREAT THANX
Next time could u please put what service this is used for
If u did i didnt see it any where

 

[hugerichman]

Ok never mind im sorry i found where it said t mobile only

 

[infowarz]

If u have a metro service phone do NOT use flash tool it changes your service to t mobile cause now I'm stuck on t mobile wen I didn't even buy it from t mobile if u can help me with this problem it would be GREAT THANX
Next time could u please put what service this is used for
If u did i didnt see it any where

Just UNLOCK the GSM and your good to go! Find unlocker here or on e*bay or anywhere that guarantees their unlocking or money back. Should not pay more then $15 usd.

Sorry for not seeing this last time I was viewing this thread.

 

[jokerpks]

Thanks worked like a charm.

 

[hugerichman]

Just UNLOCK the GSM and your good to go! Find unlocker here or on e*bay or anywhere that guarantees their unlocking or money back. Should not pay more then $15 usd.

Sorry for not seeing this last time I was viewing this thread.

I Followed a different one a long time ago and changed it back to metro alls i know is that this one works all right lol just don't use it when you don't have T-Mobile lol.

 

[jokerpks]

I Followed a different one a long time ago and changed it back to metro alls i know is that this one works all right lol just don't use it when you don't have T-Mobile lol.

Nope works on MetroPCS just use the right kdz.

 

[bad karma]

i soft bricked my lg optimus f6 [metro] changing fonts.i can follow the guide but i need the kdz for metro phone.if anyone can provide that download,it would be greatly appreciated.only had phone a week.ty

 

[Trevor Philips]

Head to the Metro section! http://androidforums.com/metropcs-optimus-f6-all-things-root/788365-unbrick-kdz-metropcs-updated-11-13-2013-a.html

 

[bad karma]

i soft bricked my lg optimus f6[metro],i cant seem to get the kdz.Ive tried every link,but no luck.i got everything else that i need downloaded.if anyone can help me out,i would really appreciate it.ty

 

[Trevor Philips]

i soft bricked my lg optimus f6[metro],i cant seem to get the kdz.Ive tried every link,but no luck.i got everything else that i need downloaded.if anyone can help me out,i would really appreciate it.ty

http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FW857785432109876543213/MS50010i_00.kdz

 

[infowarz]

i soft bricked my lg optimus f6[metro],i cant seem to get the kdz.Ive tried every link,but no luck.i got everything else that i need downloaded.if anyone can help me out,i would really appreciate it.ty

Sorry to here that.... I've been practicing that myself lately...

Did ya reboot after installing latest drivers?

And did ya allow the drivers install into the F6.

My drivers installed and then they installed some into the phone. Than it was seen by the LG Tools.
Otherwise I got an error.

Hope you get it fixed.

 

[waterlubber]

Ahhh! Help! I think I just invented a new kind of paperweight! My phone's screen shows a series of horizontal black and white stripes, and the screen brightness flies about. The lines are pulsating, too. It seems to show the rainbow colors at the home button...did I just make a pretty self-decorating brick? Please, please, please help me! I need help! Please? I followed the instructions and my phone is totaled...as well as my warranty. Help! Please? mailto:waterlubber@rocketmail.com?subject=help <---Preferably use that link right there.

At least parts of the phone are functioning at >.01%: The lines move a bit when the phone is rotated and an odd sound plays when it's unplugged...plus the buttons at he bottom light up.

 

[hubsabubs]

Perhaps you can point reference to a thread I started earlier, seemed a lot easier than all this in the end result.

http://androidforums.com/lg-optimus...-f6-check-might-work-you-too.html#post6471224

 

[HallOfPromise]

Question... I bought the F6 from MetroPCS (due to a good sale) and originally planned on unlocking it to work on T-Mobile. However, if I flash the T-mobile ROM, would I still need to unlock it in order for it to work on T-mobile? Will flashing this ROM bypass the need to unlock it?

Edit: I Googled a little deeper and I think I found the answer. It still needs to be unlocked no matter what. So I assume I should probably unlock the phone first before flashing any ROMs of any kind.

 

[HallOfPromise]

I'm on step 30. When I click Upgrade Start a window pops up saying Please install CSMG B2C Client Tool Select Tool -> B2C Client Setup menu

What is this?

Oh, and how do I unplug from Download mode? It tells me not to unplug until the process is complete...

Edit... I found out how to get out of Download Mode by holding Volume - and Power until it went off. But I still can't get passed step 30.

 

[HallOfPromise]

Well I found out that CSMG B2C Client is LG Mobile Support Tool. Took me a while to figure that one out. Well, I hope it's the right one because I downloaded it. Anyway, after installing it and fallowing the process listed above I still run onto the problem of the LG Mobile Support Tool doing nothing or anything that is described above. After pressing "Upgrade Start" on step 30, it launches LG Mobile Support Tool but then nothing after that. I tried (at risk but determined out of frustration) to continue on my own by starting the upgrade. It downloaded something large and installed it... well it tried to. It must have failed because my phone restarted right back to where it was before, with the same apps installed and settings set. Nothing happened. Better than a bricked phone, but still frustrating I cannot get this to work.

I am started to look for another method or hoping for some kind of help from here. I will keep waiting. Thank you to whomever will try to help out.

 

[hubsabubs]

Sounds to me what you need to do is use something like root explorer or another file manager and go into your system/ directory and delete the build.prop to soft brick your phone. Download the official LG mobile support tool from the LG website n install it. Restart your phone. It should go to a blank black screen after the LG logo n cycle colors on the home key. You are now soft bricked. Hook your phone to your computer via usb cable. Open the LG mobile support tool, let it discover your phone and then click Connect. It will then search for an update and tell you that it has found an upgrade. Click upgrade. Let it download the "I" firmware upgrade and it will reflash your phone back to complete stock as if it's fresh out of the box. No more root, no more worries!! Yes it's that easy. I have tested this method many times and its worked every time.

Backup your data first of course.

 

[HallOfPromise]

Sounds to me what you need to do is use something like root explorer or another file manager and go into your system/ directory and delete the build.prop to soft brick your phone. Download the official LG mobile support tool from the LG website n install it. Restart your phone. It should go to a blank black screen after the LG logo n cycle colors on the home key. You are now soft bricked. Hook your phone to your computer via usb cable. Open the LG mobile support tool, let it discover your phone and then click Connect. It will then search for an update and tell you that it has found an upgrade. Click upgrade. Let it download the "I" firmware upgrade and it will reflash your phone back to complete stock as if it's fresh out of the box. No more root, no more worries!! Yes it's that easy. I have tested this method many times and its worked every time.

Backup your data first of course.

Thank you for the tip! I will give it a go after dinner tonight.

I also should throw out there that I have the MetroPCS firmware/phone, however I want to flash the T-mobile stock ROM because I am going to sign up for T-mobile service. (I already unlocked the phone.) This is not a requirement for me, but I do want it done. Is there any way I can make sure the LG Mobile Support Tool installs the T-mobile ROM rather than the MetroPCS ROM?