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

[cordell]

How-To: Flash Stock LG Rom - Android Forums

Right here

 

[DCJoe]

I used version 0.4.2 of kp500-utils-en. Version 0.4 does not work (I accidentally tried that one first).

 

[hamagc]

I used version 0.4.2 of kp500-utils-en. Version 0.4 does not work (I accidentally tried that one first).

can you give us a step by step for those who don't really know what they are doing? is it just option j?

 

[kingdavidbaker]

Also what did you put for the Phone Model and software version?

Did you just use the correct info?

Model: LGLS670
Version: LS670ZVC

??

 

[sfhub]

I used version 0.4.2 of kp500-utils-en. Version 0.4 does not work (I accidentally tried that one first).

So instead of flashing V9, perhaps you can just try flashing VC from zefie's archive.

Theoretically, that would save you the step of going to V9, then having the LG Update Tool download the VC cab and essentially do what you could have done yourself using the kp500-utils-en tool in the first place.

 

[DCJoe]

Yes, I followed the instructions in the Android Forums link, but changed the model and versions accordingly. The file I have is named LS670ZV9_20.cab, so:

Model: LS670 (because the filename didn't have LG in front)
Version: LS670ZV9_20

I assume you could substitute the ZVC file in there and that should work.

One note: I haven't yet rooted. I think it is because adb hates me and I need to do the thing where I kill the process and restart. But it didn't work the first time. I pray it didn't keep the OTA recovery.

 

[DCJoe]

sfhub, right, I used v9 because I already had the file on my computer and didn't realize I could use zvc.

 

[sfhub]

Also what did you put for the Phone Model and software version?

Did you just use the correct info?

Model: LGLS670
Version: LS670ZVC

??

I'm guessing it is asking what version you are writing to the phone rather than what version you have on the phone. However I haven't run to the tool yet, just going by what is logical and what is specified in the LG Ally thread.

 

[DCJoe]

Arrgh! Still not rooted! I think it may not have replaced the OTA VC recovery. I hope I am wrong.

 

[kingdavidbaker]

I am unable to complete the LG update. Goes into the 90% range then says "updating is not possible any longer due to a fatal error while the LG Mobile Phone Software Update."

Log:

14:01:44 : [C:\LGMobileUpgrade] ???丮 ???? ?õ?
14:01:44 : RemoveDirectory1 Error(2):C:\LGMobileUpgrade
14:01:44 : Start Date : 2011-02-11 14:01:44
14:01:44 : -------- Buyer Test mode ---------
14:01:44 : [C:\ProgramData\LGMOBILEAX\Phone] ???丮 ???? ?õ?
14:01:44 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone
14:01:44 : *****CheckOS Start********
14:01:44 : Microsoft_Windows_XP_Professional_
14:01:44 : *****CheckPCSyncPrograms Start*****
14:01:44 : PCSyncPrograms Not Found
14:01:44 : SetEmerModeAT()
14:01:44 : _IsConnectedPhone Call
14:01:50 : _IsConnectedPhone(1)
14:01:50 : 0 - NotConnected.
14:01:50 : 1 - Normal connect success
14:01:50 : 2 - Emergency connect success
14:02:51 : Checking the connection with the cell phone...
14:02:51 : dwWaitResetTime(40000 ms)
14:02:52 : Phone Mode(1)
14:02:52 : *****GetPhoneType Start*****
14:02:59 : Phone Type : CDMA
14:02:59 : *****Start GetPreviousStep*****
14:02:59 : _GetPreviousStep(dwStep:0xffff)
14:02:59 : _SetPhoneNumber retval=1
14:02:59 : *****GetPhoneModel Start*****
14:03:01 : *****GetPhoneBinaryVersion Start*****
14:03:01 : Phone Bin Version : LS670ZVC_11
14:03:01 : *****Get ESN / IMEI / MEID Start*****
14:03:04 : ESN/IMEI/MEID : A00000288AD6F0
14:03:04 : *****GetPhoneNumber Start*****
14:03:06 : Phone Number : A00000288AD6F0
14:03:07 : ???? ?˻? ?Ķ??Ÿ - ESN_IMEI : A00000288AD6F0, Model :
14:03:07 : *******CheckBinVersion***************
14:03:07 : New Bin Version(LS670ZV9_20), Current Ver(LS670ZVC_11)
14:03:07 : ?ֽ? ?????̹Ƿ? ???׷??̵带 ?? ?ʿ䰡 ????.
14:03:09 : _GetAuthMark : wAuthMark(29083)
14:03:09 : Wait 3Sec
14:03:15 : _SetAuthMark Ok : wAuthMark(29083), PhoneMode(1)
14:03:15 : *****Start _GetBatteryLevel*****
14:03:17 : Battery(5)
14:03:19 : ResetPhone...
14:03:19 : Checking the connection with the cell phone...
14:03:19 : dwWaitResetTime(40000 ms)
14:03:49 : _IsConnectedPhone Call
14:03:54 : _IsConnectedPhone(1)
14:03:54 : 0 - NotConnected.
14:03:54 : 1 - Normal connect success
14:03:54 : 2 - Emergency connect success
14:03:54 : Phone Mode(1)
14:03:54 : m_dwBootWaitTime(35536)
14:03:54 : Checking the connection with the cell phone...
14:03:54 : dwWaitResetTime(30000 ms)
14:04:24 : _IsConnectedPhone Call
14:04:30 : _IsConnectedPhone(1)
14:04:30 : 0 - NotConnected.
14:04:30 : 1 - Normal connect success
14:04:30 : 2 - Emergency connect success
14:04:30 : Phone Mode(1)
14:04:30 : Call _ModeOffline()
14:04:31 : *****CheckPCSyncPrograms Start*****
14:04:31 : PCSyncPrograms Not Found
14:04:32 : CLGMobileHttp Class ?Ҹ????.
14:04:32 : CLGMobileHttp Class ?Ҹ?...
14:04:32 : ****************CheckAndDownload********************
14:04:32 : ******Extract Start LS670ZV9_20.cab*****
14:04:32 : Model Dll Dir(C:\ProgramData\LGMOBILEAX\Phone\)
14:04:33 : ExtractInfo Error(0)
14:04:33 : Extract cab file error.
14:04:33 : [C:\ProgramData\LGMOBILEAX\Phone] ???丮 ???? ?õ?
14:04:33 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone
14:04:33 : !pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR
14:04:33 : CLGMobileHttp Class ?Ҹ????.
14:04:33 : CLGMobileHttp Class ?Ҹ?...
14:04:33 : Page_Error ?κ??Դϴ?
14:04:33 : OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate

 

[DCJoe]

Oh man, I hope you didn't get bricked on my account.

 

[DCJoe]

Oh man, still can't root it, only getting $, not #. I think it didn't revert the OTA VC recovery to the LG VC recovery.

 

[kingdavidbaker]

Oh man, I hope you didn't get bricked on my account.

Lol naw phone is still working fine. Showed no service until I restarted it but all seems well....other than the fact I'm apparently no closer to rooting my phone :/

 

[sfhub]

I am unable to complete the LG update. Goes into the 90% range then says "updating is not possible any longer due to a fatal error while the LG Mobile Phone Software Update."

Well at least it didn't fail during flashing and just failed during extraction, like on the KDZ thread.

We need to figure out what some cab extractions fail and others don't.

 

[kingdavidbaker]

Oh man, still can't root it, only getting $, not #. I think it didn't revert the OTA VC recovery to the LG VC recovery.

Well I would think as long as you're getting a $ thats a good sign. For me when I run adb shell after ./rageagainstthecage I get a device not found error. You probably just have to start from the beginning and keep trying until you get the # prompt. I had to do it like 15 times the first time I rooted my phone.

 

[sfhub]

Oh man, still can't root it, only getting $, not #. I think it didn't revert the OTA VC recovery to the LG VC recovery.

If you ran rage twice and you can still connect to your phone using ADB then you don't have the OTA VC recovery. That one won't let you connect to your phone anymore.

Understand that rage is taking advantage of a race condition, so it doesn't work every time. You might need to change the timing a little.

Try rebooting your PC and phone and start from scracth, sometimes that helps.

 

[DCJoe]

Kingdavid I hope so, I got about 30 $ signs on Wednesday before I gave up. Not feeling lucky today, even after a bit of success an hour ago!

 

[sfhub]

Lol naw phone is still working fine. Showed no service until I restarted it but all seems well....other than the fact I'm apparently no closer to rooting my phone :/

So can both you and DCJoe run a checksum on the .cab file you used. I want to see if they are the same:

SlavaSoft FSUM - Fast File Integrity Checker

fsum *.cab

want to get to the bottom of why his was able to extract but king's wasn't.

 

[sfhub]

This post has been moved into its own thread
http://forum.androidcentral.com/lg-...alling-ota-ls670vc-using-kp500-diag-mode.html
and is no longer being maintained. Please direct any questions to the new thread.

====

Thanks go out to cordell, DCJoe, kingdavidbaker for suggesting this method and working through the procedures, KSmithInNY for comments making this more readable and of course zefie for his unroot procedure and archive of the firmware cabs.

WARNING: If you received a refurbished LS670 from Sprint as a replacement, you might run into troubles trying to use the LG Software Updater to update to VC. See this post for details on how to tell if you are affected by this problem. You can still revert to V9 and root. However if your refurbished unit is affected by this problem you will NOT be able to upgrade to the VC using the LG Software Updater. You will need to force flash VC using KP500. Instructions for how to do this are in the reference section of this post.

High level summary
1) Install the LG Software Updater Tool (link to LG Software Updater Tool) - the KP500 tool referenced below uses LG Software Updater to write the firmware to your phone
2) Force flash the V9 firmware using the KP500 tool (see below)
3) Follow the "How to Unroot" thread
(start from step 1, it will tell you how to revert to V8, restore the pre-VC recovery partition and upgrade to any version you want from there, if you are an advanced user, you can skip some steps and do the alternate procedure in the reference section)

Details for how to Force Flash V9 using KP500
(BACKUP your app data if you care about it, the following assumes you already installed USB drivers for your phone to get adb working)
a) make sure you have at least 600MB free on the drive containing your windows installation, specifically the drive that contains Documents and Settings (or ProgramData on Vista)
b) disable standby, hibernate, and any screensavers
c) make sure your phone is fully charged
d) turn on USB debugging mode on your phone

menu->settings->applications->development->USB debugging

e) download the KP500 tool zip file and unzip to your C: drive (attached, windows utility, tested in WinXP, Vista) You should have a folder

C:\KP500-Utils-EN-v0.4.2

f) download the V9 cab file from zefie's archive below (LS670ZV9_20.S9_20.P60671.cab) and place in same folder as (e)

g) open a windows command prompt

start menu->run
cmd.exe

h) from command prompt rename LS670ZV9_20.S9_20.P60671.cab as LS670ZV9.cab

c:
cd \KP500-Utils-EN-v0.4.2
ren LS670ZV9_20.S9_20.P60671.cab LS670ZV9.cab
dir

The output of the above "dir" command should look like this:
(make sure you have 5 files, one file is named LS670ZV9.cab and the file size is 99,220,700)

C:\KP500-Utils-EN-v0.4.2>dir
Volume in drive C is
Volume Serial Number is

Directory of C:\KP500-Utils-EN-v0.4.2

02/18/2011 12:48 PM <DIR> .
02/18/2011 12:48 PM <DIR> ..
11/14/2008 01:56 PM 155,648 Inf_WebDnld.dll
08/18/2009 03:49 PM 424,960 KP500-Utils-EN.exe
08/03/2009 01:15 PM 86,016 LGMobileDL.dll
08/03/2009 01:15 PM 450,560 LGMUpgradeDL.dll
02/11/2011 02:10 PM 99,220,700 LS670ZV9.cab
5 File(s) 100,337,884 bytes

i) OPTIONAL: run a checksum on the V9 cab file to verify file integrity (checksum tool link) Unzip the fsum.zip archive and place fsum.exe in the same folder/directory as (e) From your command prompt type

c:
cd \KP500-Utils-EN-v0.4.2
fsum *.cab

expected checksum - make sure both the checksum (1st column) and filename (2nd column) match

54d830c33567fccbb550f879a2ede136 *LS670ZV9.cab

j) connect your phone using USB cable

k) from your command prompt, run the KP500 program/executable

KP500-Utils-EN.exe

l) choose option J - Flash with assistant (file .cab)
m) when it asks for model # - LS670
n) when it asks for cab file - LS670ZV9.cab
o) when it asks for version - LS670ZV9_20

p) you will see "Loading..." and it should bring up the LG Software Updater Tool
if the tool aborts and you see this error near the end of the log

ExtractInfo Error(0)
Extract cab file error.

then you may have renamed the cab file incorrectly, see if this post applies.

q) let it run, do not touch your phone until complete, it'll take around 15 minutes

r) when the flash portion is complete phone will reboot and you'll see Android on your screen, this possibly could behave like a first boot, meaning it'll take a while to build everything from scratch, 3 minutes or less. You'll eventually see the Android startup home screen. This may trick you into thinking the flash is done. Don't be tricked. Regardless of whether the LG Software Updater tool is at 100% or not, do not touch the phone yet, it still needs to reload your NVRAM items onto the phone. Do NOT touch the phone until it says completed

s) once the LG Software Updater tool says completed, you should be at the standard android startup screen, congrats, you now have V9 (possibly with a VC recovery partition, which gets restored to a V9 recovery partition as part of the unroot thread) If you have no intentions of running VC OS/Radio, then you can stop here. z4root.apk will give you one-click root. However if you ever want to get root with the VC OS/Radio, you should continue with the next steps.

t) exit the LG Software Update Tool and KP500 (option Q)

u) follow the "How to Unroot" thread from step 1 and you can get to whichever version you want, as part of that process you will restore the V9 recovery partition, which is the key to allowing you to root after using the LG Software Updater Tool to install the VC update. If you are a more advanced user who doesn't need specific instructions, you can save some steps by jumping to step 2 of the alternate method in the reference section below.

v) re-enable standby, hibernation, and/or screensavers if you need to


Reference:
zefie's archive of v7,v8,v9,vC cab files for Optimus S:
Index of /zefie/files/cell/LGLS670/roms/LGNPST Recovery/cab - Mystic Midnight Files

How-to Unroot thread:
http://forum.androidcentral.com/lg-...45403-how-unroot-your-phone-return-stock.html

LG Ally instructions which inspired this solution here:
How-To: Flash Stock LG Rom on LG Ally

Stock V9 recovery image (part of larger zip file containing V8 NANDROID backup) from "How to unroot thread":
http://files.mysticmidnight.net/zefie/files/cell/LG670/roms/nandroid-thunderc-V8-STOCK.zip

LG Software Updater Tool
LG Software Updater Application Download

File checksum tool
SlavaSoft FSUM - Fast File Integrity Checker

How to root V9 Optimus S thread
http://forum.androidcentral.com/lg-optimus-s-rooting-roms-hacks/43108-how-root-lg-optimus-s.html

z4root one-click root that works with V9 Optimus S (won't work with VC Optimus S)
[APP] z4root - xda-developers

stock V9 Recovery image
http://files.mysticmidnight.net/zefie/files/cell/LGLS670/roms/V9_LG_Stock_Recovery.zip

Flash Image tool
Android Forums

Substitute these steps to Force Flash VC
f) download VC cab (LS670ZVC_11.SC_11.P60674.cab)
h) ren LS670ZVC_11.SC_11.P60674.cab LS670ZVC.cab
i) expected checksum - 579bfcf1dc2309dd71580d246c954d7f *LS670ZVC.cab
n) cab file - LS670ZVC.cab
o) version - LS670ZVC_11

Substitute these steps to Force Flash V8
f) download V8 cab (LS670ZV8_23.S8_23.P60671.cab)
h) ren LS670ZV8_23.S8_23.P60671.cab LS670ZV8.cab
i) expected checksum - cb646c7152cd8e1cdbb2d462534fe89a *LS670ZV8.cab
n) cab file - LS670ZV8.cab
o) version - LS670ZV8_23

Manually flashing stock V9 Recovery image (requires root)
UNZIP flash_image and stock V9 recovery.img to /sdcard

$ su
# mount -o remount,rw -t yaffs2 /system /system
# cat /sdcard/flash_image > /system/bin/flash_image
# chmod 755 /system/bin/flash_image
# mv /system/etc/install-recovery.sh /system/etc/install-recovery.sh.bak
# mount -o remount,ro -t yaffs2 /system /system
# flash_image recovery /sdcard/recovery.img
# reboot recovery

Alternate procedure for *advanced users* (these instructions are written at a summary level so you need to know some basic terminology/techniques):
1) Force Flash V9 using the KP500 tool
2) Root using the rageagainstthecage exploit or z4root
3) Manually flash the stock V9 Recovery image (see Reference section above)
4) Use LG Software Updater tool to update to VC
5) Root using the rageagainstthecage exploit from the Recovery Partition (ie first post of this thread)

(in step 4, you could use KP500 to Force Flash VC instead of using the LG Software Updater Tool, this would save you from having the LG Software Updater tool download a 96MB cab if you already have the VC cab downloaded yourself)

 

[DCJoe]

Here's what I got:

; SlavaSoft Optimizing Checksum Utility - fsum 2.52.00337 <www.slavasoft.com>
;
; Generated on 02/11/11 at 17:23:24
;
54d830c33567fccbb550f879a2ede136 *LS670ZV9_20.cab