[G3 Q&A, Help & Troubleshooting] yahyagedik:
Recently my phone closed instantly(no overheating). My phone was not rooted(I root it before but i uninstall it months ago, warranty fear :( ). I can not open my phone, when i try to open my phone it gets stuck in LG logo or sometimes it says

Kernel Crash

DemiGod Crash Handler : Kernel Crash!

...(some instructions to reboot and enter to download mode)...

I cant boot in to download mode, when i try download mode text appear and after that text goes, but computer recognizes phone as Qualcomm 9008(I installed many drivers...). I see some posts about how to unbrick from that port but it seems to be not working on my phone. The USB Debugging was not enabled(I'm so sad, why didn't i enable it? :( ). Is this the end for my phone? Or is it a hardware problem? I managed to get into fastboot mode for three times. I tried "fastboot devices" and nothing showed up(while in fastboot mode). I have kali linux distro(in case anyone know a fix from there). And advice/help?

I managed to run LG Smart Boot Diagnostic Tool and it logged this

>> ---------------------------- Start Logging ----------------------------

>> USB Status : Qualcomm HS-USB QDLoader 9008 (COM5)

>> Ready to access the target board...

>> BootLoader File : All EU Global_XXXX_XXXX.mbn

>> 1. Model : All EU Global , 2. Suffix : XXXX , 3. Operator : XXXX

>> Bootloader : All EU Global_XXXX_XXXX.mbn

>> AP Chip : MSM8974_G3 , BootLoader : All EU Global_XXXX_XXXX.mbn

>> Trying Connection To Device with sahara protocol for AP Chip.

>> Successfully Connection To Device with sahara protocol for AP Chip.

>> connected with Sahara Protocol successfully.

>> Loading flash to SYS_IMEM.

>> Loading 0 Kbytes to SYS_IMEM.

>> Loading 4 Kbytes to SYS_IMEM.

>> Loading 8 Kbytes to SYS_IMEM.

>> Loading 12 Kbytes to SYS_IMEM.

>> Loading 16 Kbytes to SYS_IMEM.

>> Loading 20 Kbytes to SYS_IMEM.

>> Loading 24 Kbytes to SYS_IMEM.

>> Loading 28 Kbytes to SYS_IMEM.

>> Loading 32 Kbytes to SYS_IMEM.

>> Loading 36 Kbytes to SYS_IMEM.

>> Loading 40 Kbytes to SYS_IMEM.

>> Loading 44 Kbytes to SYS_IMEM.

>> Loading 45 Kbytes to SYS_IMEM.

>> Successfully Loaded to SYS_IMEM.(Total 45 Kbytes)

>> Flash Image was normally loaded to SYS_IMEM.

>> Checking for device status.

>> [Verifying Hello Protocol]

>> Sending Hello request 0 time(s).

>> SendSync EHOST_HELLO_RSP OK.

>> Hello Response OK.

>> Got Hello response for Hello request.

>> [Verifying Security Protocol]

>> Security Response OK.

>> Connected to flash bootloader.

1> ----------------------------------------------------------------------

>> PBL SOFTWARE HISTORY

1> ----------------------------------------------------------------------

>> 1.Smart Boot Diagnosis Tool v1.3.1 <Analysis Tool for Booting failure>

>> 2.PBL_VERSION_NUMBER [fc021834] = 00000000

1> ----------------------------------------------------------------------

1> ----------------------------------------------------------------------

>> SECURE_BOOT_INFORMATION

1> ----------------------------------------------------------------------

>> [QFPROM - AP Anti-rollback Region of OEM Region ]

>> QFPROM_AP_ANTIROLLBACK_1 [0xFC4B80B8] = 0x00000000

>> QFPROM_AP_ANTIROLLBACK_2 [0xFC4B80BC] = 0x00000000

>> QFPROM_AP_ANTIROLLBACK_3 [0xFC4B80C0] = 0x00000000

>> QFPROM_AP_ANTIROLLBACK_4 [0xFC4B80C4] = 0x00000000

1> ----------------------------------------------------------------------

>> QFPROM_DEVICE_SN_1 [0xFC4B81F0] = 0x00000000

>> QFPROM_DEVICE_SN_2 [0xFC4B81F4] = 0x00000000

1> ----------------------------------------------------------------------

>> QFPROM_MSA_ANTIROLLBACK_1 [0xFC4B80C8] = 0x00000000

>> QFPROM_MSA_ANTIROLLBACK_2 [0xFC4B80CC] = 0x00000000

1> ----------------------------------------------------------------------

>> [QFPROM QFuse INFO]

>> QFPROM_OEM_ID_LSB [0xFC4B80F0] = 0x00000000

>> QFPROM_OEM_ID_MSB [0xFC4B80F4] = 0x00000000

>> QFPROM_SECURE_BOOT_ENABLE_LSB [0xFC4B83F8] = 0x00000000

>> QFPROM_SECURE_BOOT_ENABLE_MSB [0xFC4B83FC] = 0x00000000

>> QFPROM_JTAG_DISABLE_LSB [0xFC4B80E8] = 0x00000000

>> QFPROM_JTAG_DISABLE_MSB [0xFC4B80EC] = 0x00000000

1> ----------------------------------------------------------------------

>> JTAG_ID [0xFC4BE0E0] = 0x00000000

>> OEM_ID [0xFC4BE0E4] = 0x00000000

>> SERIAL_NUM_MSB [0xFC4B81F4] = 0x00000000

>> SERIAL_NUM_LSB [0xFC4B81F0] = 0x00000000

>> [SECURITY INFO]

>> OEM_CONFIG_ROW0_LSB_ADDR [0xFC4B80E8] = 0x00000000

>> OEM_CONFIG_ROW0_MSB_ADDR [0xFC4B80EC] = 0x00000000

>> OEM_CONFIG_ROW1_LSB_ADDR [0xFC4B80F0] = 0x00000000

>> OEM_CONFIG_ROW1_MSB_ADDR [0xFC4B80F4] = 0x00000000

>> FEAT_CONFIG_ROW0_LSB_ADDR [0xFC4B80F8] = 0x00000000

>> FEAT_CONFIG_ROW0_MSB_ADDR [0xFC4B80FC] = 0x00000000

>> FEAT_CONFIG_ROW1_LSB_ADDR [0xFC4B8100] = 0x00000000

>> FEAT_CONFIG_ROW1_MSB_ADDR [0xFC4B8104] = 0x00000000

1> ----------------------------------------------------------------------

>> Start Address : 0xfc102140

>> End Address : 0xfc102c80

>> Read failure in PBL Log.

>> Saved Log File(LOG_All EU Global_XXXX_XXXX_20161101_201002.txt) successfully.