[How-to] Guide to Rooting with software version LS670ZVC

[DCJoe]

It worked!. I used the V9 cab that was posted in another forum: the kdz command line tool fired up the LG software updater. I could see that it recognized that the phone currently had ZVC, and that I was trying to force V9. Then it went through the cycle, restarted, and I am on v9 now. Going to use the LG tool to update to ZVC, then root. Yes!

 

[hamagc]

were you updated ota or did you use the update tool to get to VC?

list of steps so others can try it too?

 

[sfhub]

i think it's been tried (force flashing after ota) but unsuccessfully. there was a few posts regarding this somewhere. they found that the process went further with the lgupdate tool running in the background but still failed to flash anything.

i can't imagine your phone number has anything to do with the update. LG isn't checking with sprints phone number db to see if an update has been push/installed, atleast not to my knowledge and i can't really imagine that.

if it's not the build.prop, then it has to be something else in there that the software checks to see if an update has been applied yet.

I only saw people trying on the KDZ thread and getting frustrated that the file extracting was resulting in an error. I didn't see anyone try the KP500-Utils-En.exe tool mentioned in the LG Ally thread.

According to this XDA thread, they decipher what is used by the LG software updater site and the parameters provided are the Model # and the MEID.
[ROMS] Original LG Firmware list - xda-developers

There are various NVRAM information that give you the version information. CDMA workshop clearly isn't using build.prop, but it is able to display the build data and the software version. That is my guess as to what the LG Update Tool is reading. The list of things it says it is reading is almost the same as what is available in CDMAWS.

 

[DCJoe]

To be clear:

I used the KP500-Utils program, which is essentially a command line tool, not the kdz graphic interface. I input the cab file referenced here:

http://m.forum.androidcentral.com/showthread.php?t=59274

I used the v9 cab.

 

[kingdavidbaker]

It worked!. I used the V9 cab that was posted in another forum: the kdz command line tool fired up the LG software updater. I could see that it recognized that the phone currently had ZVC, and that I was trying to force V9. Then it went through the cycle, restarted, and I am on v9 now. Going to use the LG tool to update to ZVC, then root. Yes!

Okay so let me get this straight. You used the .cab file found at the link below
http://forum.androidcentral.com/lg-...s/52145-how-unbrick-your-phone-using-kdz.html

and then used the method found at this link
How-To: Flash Stock LG Rom - Android Forums

and your now back at V9?

 

[DCJoe]

Sorry, not being 100% complete.

I had mistakenly updated to the OTA version of VC, because I thought I could root it, then of course it turned out you can't root that version.

I used the kp500 tool to force it to downgrade to V9. This fires up the LG phone update program and appears to force it to update even though it is downgrading.

Just started LG tool and it is now upgrading to the LG version of VC. Nice!

 

[sfhub]

I think he said he got it from Zefies archive, but that one should be the same as the one from the KDZ thread.

 

[DCJoe]

Yes kingdavid, that's exactly right. The phone started back up in v9. Just fired up LG Mobile Support and it is upgrading to VC now!

 

[cordell]

The command line tool worked, SWEET!!! Come on UPS bring on my Optimus with or without VC, LOL

 

[hamagc]

well now thats some good news!

i was thinking purely kzd, not the command line tool. i should learn to read posts better lol

 

[kingdavidbaker]

Sorry, not being 100% complete.

I had mistakenly updated to the OTA version of VC, because I thought I could root it, then of course it turned out you can't root that version.

I used the kp500 tool to force it to downgrade to V9. This fires up the LG phone update program and appears to force it to update even though it is downgrading.

Just started LG tool and it is now upgrading to the LG version of VC. Nice!

Is This: LS670ZV9_20.S9_20.P60671.cab the cab you used?

 

[DCJoe]

Sorry, I can't remember which thread I found the v9 cab file on, I pulled it down yesterday when I was trying to use the kdz graphical tool like others.

I have been using the forum for a few weeks now, never posted anything, but happy to finally be able to contribute. I am not a programmer but feel comfortable with computers.

 

[DCJoe]

Yes kingdavid, that's the file.

 

[hamagc]

link to file: http://csmg.lgmobile.com:9002/swdata/WEBSW/LGLS670/ASPRCQ/LS670ZV9_20/LS670ZV9_20.S9_20.P60671.cab

found in: Stuck on LG logo -- HELP!!! - xda-developers

 

[sfhub]

In summary KP500-Utils-En.exe is doing what KDZ was having trouble at, namely force flash potentially any firmware version you want.

Great find DC!

 

[sfhub]

Someone should verify (checksum) they are the same, but Zefie has an archive of all the cab files, v7 (unreleased), v8, v9, and vc

Index of /zefie/files/cell/LGLS670/roms/LGNPST Recovery/cab - Mystic Midnight Files

 

[scifan]

What are your options if you use the recovery phone option?

Sent from my LS670 using Tapatalk

 

[hamagc]

Sorry, I can't remember which thread I found the v9 cab file on, I pulled it down yesterday when I was trying to use the kdz graphical tool like others.

I have been using the forum for a few weeks now, never posted anything, but happy to finally be able to contribute. I am not a programmer but feel comfortable with computers.

lol hell of a time for your first few posts. you just saved many peoples day!

 

[kingdavidbaker]

Okay stupid question but where can I get KP500-Utils-En.exe

Edit - NM. It is part of the LGVS740 archive

 

[hamagc]

there is a copy on xda: [LG GM730/GM735/GM750] Custom roms experiment - Page 15 - xda-developers post #146

not sure if it is the right one but it's there.