[G2 Q&A, Help & Troubleshooting] jucca:
Guys please if anyone can help.

It seems I bricked my G2. I had some issue with past ROM, but managed to got in on stock 4.2.2 with KDZ method. Have downloaded German 4.2.2 open version, everything worked, so I rooted again, put TWRP 2.7.0.0. recovery, flashed this ROM: http://xdaforums.com/showthread.php?t=2656704

But got issues with that ROM too, was unable to receive incoming calls, outgoing calls was OK, so I decided to go on stock again, and to remain like that.

Again I flashed same KDZ (german open 4.2.2) file, flash went OK, but it wont enter in OS again, it just keep rebooting, cant enter in recovery mode too.

This is log from LG mobile support tool:

22:08:03 : Restart.....

22:08:03 : Start Date : 2014-05-11 22:08:03

22:08:03 : ---------- QM Testmode ---------

22:08:03 : ***** Check Tool Version *****

22:08:03 : Tool version : 1.6.9.0

22:08:03 : UpgradeDLL version : 2.1.5.0

22:08:03 : Current Dir : C:\ProgramData\LGMOBILEAX\B2C_Client

22:08:03 : LGE USB Driver Version :

22:08:03 : Android PDLV Version :

22:08:03 : Android NDLV Version : 3.10.0.0

22:08:03 : ******************************************

22:08:03 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

22:08:03 : SetEmerModeAT()

22:08:03 : _IsConnectedPhone Call

22:08:11 : _IsConnectedPhone(2)

22:08:11 : 0 - NotConnected.

22:08:11 : 1 - Normal connect success

22:08:11 : 2 - Emergency connect success

22:08:11 : *****CheckOS Start********

22:08:11 : Microsoft_Windows7_Professional_Service Pack 1

22:08:11 : *****CheckPCSyncPrograms Start*****

22:08:11 : PCSyncPrograms Not Found - OK and ready to upgrade

22:08:11 : Verifying phone connection...

22:08:11 : dwWaitResetTime(40000 ms)

22:08:12 : Phone Mode(2)

22:08:12 : *****GetPhoneType Start*****

22:08:12 : Phone Type : CDMA_2CHIP

22:08:12 : *****GetPhoneBinaryVersion Start*****

22:08:12 : Phone Bin Version : D80220B_00

22:08:12 : *****Get ESN / IMEI / MEID Start*****

22:08:12 : ESN/IMEI/MEID : 358635056150320

22:08:16 : Check Backup and Restore model

22:08:16 : Skip Backup and Restore - Emergency mode

22:08:16 : Phone type Compare start

22:08:16 : *****CheckPCSyncPrograms Start*****

22:08:17 : PCSyncPrograms Not Found - OK and ready to upgrade

22:08:18 : ****************CheckAndDownload********************

22:08:18 : Version :

22:08:18 : ******Extract Start X:\Germany OPEN 16GB KitKat D80220B_00.kdz*****

22:08:18 : Model Dll Dir(C:\ProgramData\LGMOBILEAX\Phone\)

22:08:18 : Check 2G-4G big size kdz file..

22:08:18 : Extract 2G-4G big size kdz file..

22:08:19 : NNNNN WDB FullPath(X:\Germany OPEN 16GB KitKat D80220B_00.kdz)

22:08:19 : NNNNN Model dll FullPath(C:\ProgramData\LGMOBILEAX\Phone\LGUP_8974.dll)

22:08:19 : Extract End X:\Germany OPEN 16GB KitKat D80220B_00.kdz

22:08:19 : 01 Skip delete kdz 1.1 file...

22:08:19 : ------------------Model.dll Information-------------------

22:08:19 : Filename : LGUP_8974.dll

22:08:19 : Version : 0.3.10.0

22:08:19 : File size : 1498624

22:08:19 : File date : 2014/05/11-22:08:19

22:08:19 : PC Created date: 2014/05/11-22:08:18

22:08:19 : ----------------------------------------------------------

22:08:19 : *****Check LGCM Programs Start*****

22:08:19 : LGCM Programs Not Found - OK and ready to upgrade

22:08:19 : m_pLGCyonUpdate status change.

22:08:19 : *****WorkModelDLL Start*****

22:08:19 : strPhoneBinaryPath(X:\Germany OPEN 16GB KitKat D80220B_00.kdz)

22:08:19 : strModuleDir(C:\ProgramData\LGMOBILEAX\Phone\)

22:08:19 : strModelDLLPath(C:\ProgramData\LGMOBILEAX\Phone\LGUP_8974.dll)

22:08:19 : _DetachDLL Call

22:08:25 : _DetachDLL Call End

22:08:25 : Call fn_StartUpgrade

22:08:25 : ********* 2Chip Model.dll input Parameter*************

22:08:25 : MODEL_EVENT : 32769

22:08:25 : PhoneBinaryPath : X:\Germany OPEN 16GB KitKat D80220B_00.kdz

22:08:25 : ModuleDir : C:\ProgramData\LGMOBILEAX\Phone\

22:08:25 : BootWaitTime : 49500

22:08:25 : UsbHighSpeed : FALSE

22:08:25 : PhoneMode : 2

22:08:25 : NewPhoneBinVersion : Germany OPEN 16GB KitKat D80220B_00

22:08:25 : ClearSI : FALSE

22:08:25 : AuthMark : 0

22:08:25 : ********* 2Chip Model.dll input Parameter End*************

22:08:28 : wParam : 20, lParam = 540

22:08:28 : MODEL DLL Event : (20, 540)

22:08:28 : Model File Count = 540

22:08:28 : wParam : 6000, lParam = 0

22:08:28 : #################################################

22:08:28 : Indirect Internal / download mode

22:08:28 : wParam : 6001, lParam = 0

22:08:28 : #################################################

22:08:28 : Indirect Internal / PC to Phone send start

22:08:28 : wParam : 13, lParam = 10

22:08:28 : MODEL DLL Event : (13, 10)

22:08:29 : wParam : 20, lParam = 480

22:08:29 : MODEL DLL Event : (20, 480)

22:08:29 : Model File Count = 480

22:08:33 : wParam : 13, lParam = 11

22:08:33 : MODEL DLL Event : (13, 11)

22:08:39 : wParam : 13, lParam = 12

22:08:45 : wParam : 13, lParam = 13

22:08:50 : wParam : 13, lParam = 14

22:08:55 : wParam : 13, lParam = 15

22:09:06 : wParam : 13, lParam = 16

22:09:10 : wParam : 13, lParam = 17

22:10:26 : wParam : 13, lParam = 18

22:10:32 : wParam : 13, lParam = 19

22:10:39 : wParam : 13, lParam = 20

22:10:39 : wParam : 20, lParam = 420

22:10:39 : MODEL DLL Event : (20, 420)

22:10:39 : Model File Count = 420

22:10:45 : wParam : 13, lParam = 21

22:10:45 : MODEL DLL Event : (13, 21)

22:11:26 : wParam : 13, lParam = 22

22:11:39 : wParam : 13, lParam = 23

22:11:46 : wParam : 13, lParam = 24

22:11:52 : wParam : 13, lParam = 25

22:11:57 : wParam : 13, lParam = 26

22:12:04 : wParam : 13, lParam = 27

22:12:10 : wParam : 13, lParam = 28

22:12:15 : wParam : 13, lParam = 29

22:12:20 : wParam : 13, lParam = 30

22:12:20 : wParam : 20, lParam = 360

22:12:20 : MODEL DLL Event : (20, 360)

22:12:20 : Model File Count = 360

22:12:27 : wParam : 13, lParam = 31

22:12:27 : MODEL DLL Event : (13, 31)

22:12:32 : wParam : 13, lParam = 32

22:12:39 : wParam : 13, lParam = 33

22:12:44 : wParam : 13, lParam = 34

22:12:50 : wParam : 13, lParam = 35

22:12:55 : wParam : 13, lParam = 36

22:13:01 : wParam : 13, lParam = 37

22:13:07 : wParam : 13, lParam = 38

22:13:12 : wParam : 13, lParam = 39

22:13:18 : wParam : 13, lParam = 40

22:13:18 : wParam : 20, lParam = 300

22:13:18 : MODEL DLL Event : (20, 300)

22:13:18 : Model File Count = 300

22:13:24 : wParam : 13, lParam = 41

22:13:24 : MODEL DLL Event : (13, 41)

22:13:30 : wParam : 13, lParam = 42

22:13:35 : wParam : 13, lParam = 43

22:13:40 : wParam : 13, lParam = 44

22:13:46 : wParam : 13, lParam = 45

22:13:48 : wParam : 6002, lParam = 0

22:13:48 : #################################################

22:13:48 : Indirect Internal / PC to Phone send end

22:14:08 : wParam : 13, lParam = 46

22:14:28 : wParam : 13, lParam = 47

22:14:48 : wParam : 6003, lParam = 0

22:14:48 : #################################################

22:14:48 : Indirect Internal / Phone internal upgrade start

22:14:48 : wParam : 13, lParam = 48

22:14:51 : wParam : 13, lParam = 49

22:14:53 : wParam : 13, lParam = 50

22:14:53 : wParam : 20, lParam = 240

22:14:53 : MODEL DLL Event : (20, 240)

22:14:53 : Internet Connect fail..Offline upgrade....

22:14:53 : Model File Count = 240

22:14:56 : wParam : 13, lParam = 51

22:14:56 : MODEL DLL Event : (13, 51)

22:14:58 : wParam : 13, lParam = 52

22:15:02 : wParam : 13, lParam = 53

22:15:05 : wParam : 13, lParam = 54

22:15:09 : wParam : 13, lParam = 55

22:15:15 : wParam : 13, lParam = 56

22:15:19 : wParam : 13, lParam = 57

22:15:22 : wParam : 13, lParam = 58

22:15:30 : wParam : 13, lParam = 59

22:15:35 : wParam : 13, lParam = 60

22:15:35 : wParam : 20, lParam = 180

22:15:35 : MODEL DLL Event : (20, 180)

22:15:35 : Model File Count = 180

22:15:45 : wParam : 13, lParam = 61

22:15:45 : MODEL DLL Event : (13, 61)

22:15:49 : wParam : 13, lParam = 62

22:15:52 : wParam : 13, lParam = 63

22:15:55 : wParam : 13, lParam = 64

22:16:02 : wParam : 13, lParam = 65

22:16:05 : wParam : 13, lParam = 66

22:16:09 : wParam : 13, lParam = 67

22:16:15 : wParam : 13, lParam = 68

22:16:19 : wParam : 13, lParam = 69

22:16:22 : wParam : 13, lParam = 70

22:16:22 : wParam : 20, lParam = 120

22:16:22 : MODEL DLL Event : (20, 120)

22:16:22 : Model File Count = 120

22:16:29 : wParam : 13, lParam = 71

22:16:29 : MODEL DLL Event : (13, 71)

22:16:32 : wParam : 13, lParam = 72

22:16:35 : wParam : 13, lParam = 73

22:16:42 : wParam : 13, lParam = 74

22:16:45 : wParam : 13, lParam = 75

22:16:49 : wParam : 13, lParam = 76

22:16:56 : wParam : 13, lParam = 77

22:16:59 : wParam : 13, lParam = 78

22:17:02 : wParam : 13, lParam = 79

22:17:06 : wParam : 6004, lParam = 0

22:17:06 : #################################################

22:17:06 : Indirect Internal / Phone internal upgrade end

22:17:06 : wParam : 13, lParam = 80

22:17:09 : wParam : 13, lParam = 81

22:17:12 : wParam : 13, lParam = 82

22:17:15 : wParam : 13, lParam = 83

22:17:18 : wParam : 13, lParam = 84

22:17:21 : wParam : 13, lParam = 85

22:17:24 : wParam : 13, lParam = 86

22:17:27 : wParam : 13, lParam = 87

22:17:30 : wParam : 13, lParam = 88

22:17:33 : wParam : 13, lParam = 89

22:17:36 : wParam : 13, lParam = 90

22:17:39 : wParam : 13, lParam = 91

22:17:42 : wParam : 13, lParam = 92

22:17:45 : wParam : 13, lParam = 93

22:17:48 : wParam : 13, lParam = 94

22:17:51 : wParam : 13, lParam = 95

22:17:54 : wParam : 13, lParam = 96

22:17:57 : wParam : 13, lParam = 97

22:18:00 : wParam : 13, lParam = 98

22:18:03 : wParam : 13, lParam = 99

22:18:06 : wParam : 20, lParam = 0

22:18:06 : MODEL DLL Event : (20, 0)

22:18:06 : Model File Count = 0

22:18:06 : wParam : 12, lParam = 1

22:18:06 : MODEL DLL Event : (12, 1)

22:18:06 : CLGMobileHttp Class ¼Ò¸ê½ÃÀÛ.

22:18:06 : CLGMobileHttp Class ¼Ò¸ê...

22:18:06 : CleanModelDll() : Free Model.dll

22:18:06 : _DetachDLL Call

22:18:11 : _DetachDLL Call End

22:18:11 : Step : S/W Upgrade Complete!

22:18:11 : Check Froyo to ICS upgrade phone model....