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Flashing LG signed Firmware

LG Spectrum firmware
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OP Neph

Neph

Android Lover

  • 119 posts

Posted 09 February 2012 - 11:30 PM #1

November 21, 2013:

LG has broken the ability to download older cab files.  You can still grab the current version if you know what you are doing, but it's much easier to just use the LG tool as it was intended.  Until someone finds a work around, I'm leaving the new instructions here and the old instructions below as a reference in case you have a copy of the old .cab files.

 

NEW INSTRUCTIONS

 

Install the drivers for your Spectrum if you have not already: http://androidfiles....WHQL_v2.3.1.msi

Grab this and install: http://csmg.lgmobile...B2CAppSetup.exe

Let it update over the internet when you run it the first time.

Go options -> upgrade recovery

Follow the on screen instructions. Stock roms should have no issues getting the program to auto pull the settings, but if you do, just type in your IMEI. Let it do it's thing and make sure you're not on a USB hub and that you're using a quality USB cable.

When all is said and done, you should be on ICS V8. You may need to factory reset your phone if you run into boot loops after the update.

 

 

OLD INSTRUCTIONS BELOW

 

 

DO NOT FLASH THIS IF YOU ARE STUCK IN CWM. IF YOU KEEP BOOT LOOPING INTO CWM, THEN FLASH THE BOOT LOOP FIX FOUND HERE. YOU WILL BRICK YOUR PHONE OTHERWISE:
http://androidforums...g-spectrum.html


I've decided that this should be in it's own thread as it is relevant to most of the work going on right now and should not be buried inside of another thread.

Here is instructions on how to flash a new firmware. I take no responsibility if your mess up your phone in the process. If you do something wrong, you will brick your phone, especially if it's during the final steps as flashing the cab actually deletes your recovery partition before flashing the new one.

Tools needed:

KP500 (http://androidfiles....ls/LG_Tools.zip) - Personally hosted, so please don't hammer the site

LG Mobile Support Tool from LG site (http://www.lg.com/us...-VS920#software)
Note: (They removed the link to the update tool from the VS920. Here is the direct link if you can't find it buried in their site. http://csmg.lgmobile...B2CAppSetup.exe )

.cab file containing your firmware
3.02 - http://csmgdl.lgmobi...2.P58012.R5.cab (no longer downloadble from site.)
4.04 - http://csmgdl.lgmobi...4.P58012.R5.cab (no longer downloadble from site.)
6.00 - http://csmgdl.lgmobi...0.P58013.R5.cab (no longer downloadble from site.)
7.15 (ICS) - http://csmgdl.lgmobi...5.P58014.R5.cab (no longer downloadble from site.)
8.10(ICS) - http://csmgdl.lgmobi...0.P58017.R5.cab (no longer downloadble from site.)

 

New 8.10 download link if you really want to go this method.

http://csmgdl.lgmobi...0.P58017.R5.cab

Unified Verizon Drivers : Either get these from your phone while in charge only mode or from this link which is the same file http://androidfiles....WHQL_v2.3.1.msi

An internet connection on the PC you are working from. The LG tool needs an internet connection while flashing the phone or it will fail. If you have a firewall asking if you want to let the LG Tool talk to the internet, let it.

Instructions:

Charge your battery to full, not just 80% or so.

Run the driver package and let it run its course. It will appear as thou nothing is happening for about 30 seconds, then the installer will finish running. Then set phone to Debug mode and make sure all additional drivers install correctly. If you have adb on your PC, you can test your connection buy running ADB shell and seeing if your phone connects correctly

Go into your Windows Device Manager and disable the device under Modems -> LGE AndroidNet for VZW USB Modem

Remove your battery and remove your memory card.

Reboot your phone in "Download Mode" (re-insert your battery and replace the back plate. Hold down vol up + vol down. Plug in usb cable while holding both buttons.)

I highly recommend using the official cable that came with the phone when doing a flash and not being on and USB hubs.

Extract KP500 tool into a directory (i.e. C:\KP500)
Move your .cab file to the same directory

Run your KP500 file as administrator
Choose I "Flash with assistance (file .cab)
Phone Model = VS920
Input the full path to your cab file including .CAB at the end (i.e. C:\KP500\VS920Z3_02.S3_02.P58012.R5.cab)
Input the full file name of your cab (aka version) without the Cab (i.e. VS920Z3_02.S3_02.P58012.R5)

Watch as the LG update tool pops up.

It will most likely tell you that your phone is disconnected. This is normal and to be expected

Click Restart.

It will find your phone and go thru extracting the cab file and then extracting a .bin file.

At this point if you did something wrong with driver setup or not disabling the modem driver, you will get a page error. If you did it right, you will get a percentage indicator that goes past 15%. Every so often a message will go by about "model dll message not found". This is normal.

Wait for your phone to finish flashing and let it reboot on its own. I did not do a factory reset and everything came back as it was, but with a new firmware version. You may wish to do a factory reset just to be safe.

Enjoy the fact that you can now recover your phone if you do something wrong (in most cases)


Edited by Neph, 21 October 2013 - 07:22 PM.

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OP Neph

Neph

Android Lover

  • 119 posts

Posted 14 May 2012 - 07:01 PM #2

Updated with V6 cab file link
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LillieBennett

LillieBennett

Average Android

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Posted 18 May 2012 - 08:27 AM #3

Is is possible to use the V6 cab if my original was V4 (VS920ZV4)?
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OP Neph

Neph

Android Lover

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Posted 18 May 2012 - 05:07 PM #4

Yes, thou flashing the cab file should be a last resort option. It will however work on what ever you were previously at, be it stock any level or custom rom/kernel.
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avelis26

avelis26

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Posted 15 June 2012 - 09:16 PM #5

Would anyone know where to get these cab files for a different phone like the vs840?

Sent from my VS840 4G using Tapatalk 2
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OP Neph

Neph

Android Lover

  • 119 posts

Posted 15 June 2012 - 10:15 PM #6

http://csmg.lgmobile...k2.jsp?esn=IMEI
Where IMEI = your actually IMEI number. As I found out with the LG OE for Virgin Mobil, not all cab files come with the .dll inside them needed to flash using this method.

P.S. , use Firefox to see the info. Internet Explorer hides all the text.
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PsiReaper

PsiReaper

Average Android

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Posted 04 July 2012 - 08:04 PM #7

I followed the steps that you provided. However, my phone has been on the screen where it's showing a box pointing to the green android. It's been that way for over 20 minutes. Is there anything I need to do? How long does it take to fully flash?
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OP Neph

Neph

Android Lover

  • 119 posts

Posted 05 July 2012 - 02:40 PM #8

Well, at this point, you are probably out of luck. You most likely flashed while you had a flag on your /misc partition. Were you stuck in CWM and decided to flash the .cab? If so, there is no way out of it unless you can find someone with a custom .tot file that has CWM recovery built into it. That or taking it in to be serviced by LG.
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PsiReaper

PsiReaper

Average Android

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Posted 06 July 2012 - 07:28 AM #9

I believe that's what happened. I was trying to flash to CM9 and it didn't work. Reading elsewhere, it was suggested that the device should be flashed back to stock. That's when it became "bricked." Where can I get the .tot file that has CWM?
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OP Neph

Neph

Android Lover

  • 119 posts

Posted 06 July 2012 - 08:03 AM #10

You're guess is as good as mine at this point. I don't have one and I believe Jcase is the only one with enough knowledge to make a custom one without messing up the whole thing. If you make it wrong, you're stuck with a phone that has nothing on it what so ever, including no ability to boot into download mode. I would contact LG and let them know your phone is stuck at the screen you described and see if they can offer a remedy. Probably will require sending it to a service station to be reflashed for some low $ cost.

Edited by Neph, 06 July 2012 - 08:05 AM.

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