[LG Optimus L9 P760, P765, P768, P769] Galegor:
I made a terrible mistake by repeating on my P760 steps shown on youtube: How To Fix Status 7 Error with CWM Recovery on Rooted Android! http://www.youtube.com/watch?v=QW1znjDLe-k

Phone was downgraded with V10A_00.kdz and then successfully rooted. Next I was receiving status 7 in clockwork when trying to install latest CM 10.2. So removed line from file META_INF/co/google/android/updater-script

assert(getprop("ro.product.device") == "p760" || getprop("ro.build.product") == "p760");

After installation I had LG Security Error. Manage to remove it using fastboot x-loader.img, recovery.img, boot.img (files from: http://xdaforums.com/showpost.php?p=39716305&postcount=7), battery is charging after this and standard animation appears again.

But still not possible is to install previous ROMs using Factory ICS/JB ROM WITH OFFLINE FIX as I getting problem with (_CheckPhoneType() Error) (checked on: V10A_00.kdz and P760_Orange(Poland)_V20I_00.kdz) in UpTestEX_mod2_marwin.exe

That is only log I have at the moment:

23:32:09 : [C:\LGMobileUpgrade] Try to delete folder
23:32:09 : RemoveDirectory1 Error(2):C:\LGMobileUpgrade
23:32:09 : Start Date : 2013-11-05 23:32:09
23:32:09 : ---------- QM Testmode ---------
23:32:09 : ***** Check Tool Version *****
23:32:09 : Tool version : 1.5.4.8
23:32:09 : UpgradeDLL version : 1.2.6.7
23:32:09 : Current Dir : C:\ProgramData\LGMOBILEAX\B2C_Client
23:32:09 : LGE USB Driver Version :
23:32:09 : Android PDLV Version :
23:32:09 : Android NDLV Version :
23:32:09 : ******************************************
23:32:09 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder
23:32:09 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone
23:32:09 : SetEmerModeAT()
23:32:09 : _IsConnectedPhone Call
23:32:25 : _IsConnectedPhone(1)
23:32:25 : 0 - NotConnected.
23:32:25 : 1 - Normal connect success
23:32:25 : 2 - Emergency connect success
23:32:27 : _IsConnectedPhone Call for SmartPhone
23:32:27 : _IsConnectedPhone(0)
23:32:27 : 0 - NotConnected.
23:32:27 : 1 - Normal connect success
23:32:27 : 2 - Emergency connect success
23:32:27 : *****CheckOS Start********
23:32:27 : Microsoft_Windows7_Professional_Service Pack 1
23:32:27 : *****CheckPCSyncPrograms Start*****
23:32:27 : PCSyncPrograms Not Found - OK and ready to upgrade
23:32:27 : Checking the connection with the cell phone...
23:32:27 : dwWaitResetTime(40000 ms)
23:32:28 : _IsConnectedPhone Call
23:32:33 : _IsConnectedPhone(1)
23:32:33 : 0 - NotConnected.
23:32:33 : 1 - Normal connect success
23:32:33 : 2 - Emergency connect success
23:32:33 : Phone Mode(1)
23:32:33 : *****GetPhoneType Start*****
23:32:34 : [011,700,147,062,092]Updating is not possible any longer due to a fatal error.\n\n[009,400,102,102,102]Disconnect from and connect the cable into your phone again and remove \nand install the battery and press the [009,700,102,102,102]'Restart'[009,400,102,102,102] button. This will resume the \nupgrade.\n\n\n\n\n\n\n\n\n\n\n\n\nPress the [009,700,102,102,102]Quit[009,400,102,102,102] button to stop the update. (_CheckPhoneType() Error)
23:32:34 : !pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR
23:32:34 : Page_Error şÎşĐŔÔ´Ď´Ů
23:32:34 : ż©±â´Â Retry şÎşĐŔÔ´Ď´Ů
23:32:34 : OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate

Anyone have any idea about this problem and how to resolve it?