[G3 Q&A, Help & Troubleshooting] grhopper:
Here is the log file from the TOT error:

20:33:24 : Start Date : 2016-03-21 20:33:24

20:33:24 : ---------- CSE mode ---------

20:33:24 : ***** Check Tool Version *****

20:33:24 : Tool version :

20:33:24 : UpgradeDLL version :

20:33:24 : Current Dir : C:\Users\Stephen\Downloads\LG_Flash_Tool_2014\LG Flash Tool 2014

20:33:24 : LGE USB Driver Version :

20:33:24 : Android PDLV Version :

20:33:24 : Android NDLV Version :

20:33:24 : ******************************************

20:33:24 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

20:33:24 : *****CheckOS Start********

20:33:24 : Microsoft_Windows8_Professional_

20:33:24 : *****CheckPCSyncPrograms Start*****

20:33:25 : PCSyncPrograms Not Found - OK and ready to upgrade

20:33:25 : SetEmerModeAT()

20:33:25 : Verifying phone connection...

20:33:25 : dwWaitResetTime(40000 ms)

20:33:26 : _IsConnectedPhone Call

20:33:43 : _IsConnectedPhone(1)

20:33:43 : 0 - NotConnected.

20:33:43 : 1 - Normal connect success

20:33:43 : 2 - Emergency connect success

20:33:43 : Phone Mode(1)

20:33:43 : *****GetPhoneType Start*****

20:33:43 : Phone Type : CDMA

20:33:43 : *****Get ESN / IMEI / MEID Start*****

20:33:44 : Skip Backup and Restore - CSE mode.

20:33:44 : Skip Sequential upgrade info check - CSE mode.

20:33:44 : *****CheckPCSyncPrograms Start*****

20:33:44 : PCSyncPrograms Not Found - OK and ready to upgrade

20:33:45 : ****************CheckAndDownload********************

20:33:45 : Version : VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5

20:33:45 : !!*****OpenURL Start*****!!

20:33:45 : ******Extract Start C:\Users\Stephen\Downloads\VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5.kdz*****

20:33:45 : Model Dll Dir(C:\ProgramData\LGMOBILEAX\Phone\)

20:33:45 : Check 2G-4G big size kdz file..

20:33:45 : Extract 2G-4G big size kdz file..

20:33:45 : NNNNN WDB FullPath(C:\Users\Stephen\Downloads\VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5.kdz)

20:33:45 : NNNNN Model dll FullPath(C:\ProgramData\LGMOBILEAX\Phone\LGUP_8974.dll)

20:33:45 : Extract End C:\Users\Stephen\Downloads\VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5.kdz

20:33:45 : 01 Skip delete kdz 1.1 file...

20:33:45 : ------------------Model.dll Information-------------------

20:33:45 : Filename : LGUP_8974.dll

20:33:45 : Version : 0.3.17.0

20:33:45 : File size : 1568256

20:33:45 : File date : 2016/03/21-20:33:45

20:33:45 : PC Created date: 2016/03/21-20:33:45

20:33:45 : ----------------------------------------------------------

20:33:46 : *****Check LGCM Programs Start*****

20:33:46 : LGCM Programs Not Found - OK and ready to upgrade

20:33:46 : m_pLGCyonUpdate status change.

20:33:46 : *****WorkModelDLL Start*****

20:33:46 : strPhoneBinaryPath(C:\Users\Stephen\Downloads\VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5.kdz)

20:33:46 : strModuleDir(C:\ProgramData\LGMOBILEAX\Phone\)

20:33:46 : strModelDLLPath(C:\ProgramData\LGMOBILEAX\Phone\LGUP_8974.dll)

20:33:47 : _DetachDLL Call

20:33:52 : _DetachDLL Call End

20:33:52 : Call fn_StartUpgrade

20:33:52 : Phone mode change -> CSE

20:33:52 : ********* CDMA Model.dll input Parameter *************

20:33:52 : MODEL_EVENT : 32769

20:33:52 : PhoneBinaryPath : C:\Users\Stephen\Downloads\VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5.kdz

20:33:52 : ModuleDir : C:\ProgramData\LGMOBILEAX\Phone\

20:33:52 : BootWaitTime : 49500

20:33:52 : UsbHighSpeed : FALSE

20:33:52 : PhoneMode : 4

20:33:52 : NewPhoneBinVersion : VS98523C_01 - MD5 BFA0750DC549B0E4AC4F50EF8C34DEE5

20:33:52 : ClearSI : FALSE

20:33:52 : AuthMark : 0

20:33:52 : ********* CDMA Model.dll input Parameter End*************

20:33:55 : Page_Error ºÎºÐÀÔ´Ï´Ù

20:34:04 : =======Cancel button click : m_nStep(6)

20:34:04 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

20:34:04 : RemoveDirectory1 Error(32):C:\ProgramData\LGMOBILEAX\Phone

20:34:04 : _DetachDLL Call

20:34:09 : _DetachDLL Call End

20:34:09 : FreeLibrary Call

20:34:09 : FreeLibrary Call End

20:34:09 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

20:34:09 : RemoveDirectory1 Error(32):C:\ProgramData\LGMOBILEAX\Phone