How can fix " Download mode is disabled by Skill Switch " ? - G3 Q&A, Help & Troubleshooting

I have one phone model LG G3 F400s , can't enter download mode , i received report "Download mode is disabled by Skill Switch"

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Missing Diag Config Options

Hello everyone,
I'm trying to flash AWS onto my I747m and currently am stuck at QPST with 'no phone' error. People have encountered this problem using Galaxy Note 2 attempting AWS mod and fixed it by enabling "DM/DUN over HSIC" in Diag Config mode so I want to try to do the same.
My problem is:
1. *#9090# code doesnt not work for me to prompt Diag Config
2. I am able to enter Diag Config mode by doing *#197328640# > UMTS > Common > Diag Config and my options are:
[1]USB()
[2]UART(*)
[3]DBG MSG ON (*)
[4]DBG MSG OFF ()
I don't have the options for:
[1]DM/DUM over HS-USB[]
[2]DM/DUM over HSIC[]
[3]DM/DUN/RmNET over HSUSB[]
[4]DM over UART(*)
[5]DBG MSG ON(*)
[6]DBG MSG OFF(*)
Where can I find the option to toggle DM/DUN over HSIC?
forevergone said:
Hello everyone,
I'm trying to flash AWS onto my I747m and currently am stuck at QPST with 'no phone' error. People have encountered this problem using Galaxy Note 2 attempting AWS mod and fixed it by enabling "DM/DUN over HSIC" in Diag Config mode so I want to try to do the same.
My problem is:
1. *#9090# code doesnt not work for me to prompt Diag Config
2. I am able to enter Diag Config mode by doing *#197328640# > UMTS > Common > Diag Config and my options are:
[1]USB()
[2]UART(*)
[3]DBG MSG ON (*)
[4]DBG MSG OFF ()
I don't have the options for:
[1]DM/DUM over HS-USB[]
[2]DM/DUM over HSIC[]
[3]DM/DUN/RmNET over HSUSB[]
[4]DM over UART(*)
[5]DBG MSG ON(*)
[6]DBG MSG OFF(*)
Where can I find the option to toggle DM/DUN over HSIC?
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tray to connect it in off position to a software service as z3x than turn it on than try the code we wait the result

LG G3 6.0 cant enter hidden menu 3845*

Recently updated to 6.0 via kdz flash and i want to enter hiden lg menu with 3845 855 code . Previous it works for now i can enter any sugesstions ?
*#546368#*855#

"IMEI : null" in my LG G3 D855

I am using LG G3 D855 unlocked with Android 5.0 v21a-AME-XX (unrooted) in India. It had battery issue and was doing reboot loop frequently. So I tried to reset the firmware via LG mobile support --> Options --> Upgrade recovery and second time via LG PC suite --> Restore upgrade errors. After that the IMEI number of my handset has become null. I don't know how to restore back. Please help me as I have tried hard reset and factory reset. No use.
I am also unable to view the 'Software info' under settings as it hangs there by saying 'settings not responding'. USB OTG is also not working (tried with different pen drives).
Kindly help me.
If I take it to LG authorized service centre ( http://www.lgmobiles.com )
Try this to restore your imei
http://tips4droid.com/backup-restore-lost-imei-lg-g2/
No use
I am unable to access software info because something has happened to the firmware. The settings is getting hung and the phone restarts when I try to enter software info.
Can I take backup of the IMEI without rooting?. Your response didn't work as I am unable to access software info. Is there any other way?.

hang on setting

hi
i can't use phone about setting
when i go to setting phone hang and after 5min restart
after restart hang on " OS MINI " and then i flash again to up again but about setting not work
i need enable usb debuging to fix imei
model : D855 16G
firmware: D855 30e
sorry for my English
i like english but i don't have time to learn

Security error authentication fail#9 lg h818 p

Hi every body I remove lg back up and then restart phone and give error #9 and don't go to recovery mode or download mode
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