NTCODE Error Solution

yken

Senior Member
Dec 24, 2006
1,353
242
83
1. Go to secret menu of your phone (*#546368#*850#)

2. Tap SVC menu, then Version Info.

3. In Version info find NT Code.

4. Change wbatever code you have there to "1","FFF,FFF,FFFFFFFF,FFFFFFFF,11" - that is open europe.

After pasting the above code, the NT Code should display something like code write done, or similar, instead of your old NT Code.

This info is from MrBeem, he sent to me. I have this error but it did not work for me, i get Write Error maybe because i I dont have root. If you are rooted can work for you.
 
Last edited:
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yken

Senior Member
Dec 24, 2006
1,353
242
83
I get write error too. I think you have to have root to make this work.

Talking of which, has anyone got root on 7.0 yet?
From Mrbeem:
Hello. Got an update on the version error you have/had.
1. yes, you do have to be rooted, to get root u must het twrp-3.2.0-1-beta1-H850.img and SuperSu2.78 SR4. You flash twrp via minimal adb and fastboot, instructions on XDA forum, after flash, pull battery out, back in and you MUST get to recovery by Vol Down+POWER combination and you only get 1 try. If you don't manage to get to recovery and your system starts booting, you must flash twrp all over again. Once in TWRP, press skip if it prompts for password, enable read/write by swiping right, and install SuperSu zip file you have to have on your external sd card. With all that done, reboot and voila, you're rooted.
2. After boot, go to hidden menu, to ntcode. In the ntcode put "1","FFF,FFF,FFFFFFFF,FFFFFFFF,FF" notice, last 2 are FF, not 11. you should get NTCODE WRITE OK
3. with root acces granted go to cust folder and enable R/W option. I recommend using root explorer 4.0.4
4. Check subfolder list in cust folder. You will have folders like VDF_OP, EUR_OP or something like that. Pick any and memorize its name. this will become your soft ver. after you finish.
5. Find file named cust_path_mapping.cfg and open it with TEXT EDITOR!
6. at the end of the document, add a following line: FFFFFF,FF=/cust/name of subfolder in cust folder you memorized in step 4
7. save file, close it and reopen to check if your added line sticks. if it doesn't you haven't pressed "mount R/W" button in root explorer. Press "mount R/W" and repeat steps 5 to 7 .
8. Reboot, and now you should get your system branded (if you chose a specific carrier subfolder in /cust) or no brand and no version error (if you chose open europe in /cust).
 

fmartins29

Member
Mar 16, 2013
34
8
0
Lisboa
Error

From Mrbeem:
Hello. Got an update on the version error you have/had.
1. yes, you do have to be rooted, to get root u must het twrp-3.2.0-1-beta1-H850.img and SuperSu2.78 SR4. You flash twrp via minimal adb and fastboot, instructions on XDA forum, after flash, pull battery out, back in and you MUST get to recovery by Vol Down+POWER combination and you only get 1 try. If you don't manage to get to recovery and your system starts booting, you must flash twrp all over again. Once in TWRP, press skip if it prompts for password, enable read/write by swiping right, and install SuperSu zip file you have to have on your external sd card. With all that done, reboot and voila, you're rooted.
2. After boot, go to hidden menu, to ntcode. In the ntcode put "1","FFF,FFF,FFFFFFFF,FFFFFFFF,FF" notice, last 2 are FF, not 11. you should get NTCODE WRITE OK
3. with root acces granted go to cust folder and enable R/W option. I recommend using root explorer 4.0.4
4. Check subfolder list in cust folder. You will have folders like VDF_OP, EUR_OP or something like that. Pick any and memorize its name. this will become your soft ver. after you finish.
5. Find file named cust_path_mapping.cfg and open it with TEXT EDITOR!
6. at the end of the document, add a following line: FFFFFF,FF=/cust/name of subfolder in cust folder you memorized in step 4
7. save file, close it and reopen to check if your added line sticks. if it doesn't you haven't pressed "mount R/W" button in root explorer. Press "mount R/W" and repeat steps 5 to 7 .
8. Reboot, and now you should get your system branded (if you chose a specific carrier subfolder in /cust) or no brand and no version error (if you chose open europe in /cust).
Can't pass the step 2, it gives an error. :(
 

stuclark

Senior Member
May 15, 2006
521
125
0
London, UK
I've installed TWRP ans SuperSU as shown above, but I still get Write Error.

Looking in the SuperSU app, it says under "Install SuperSU into /system" - "Not (currently) available in system-less mode".

How can I fix the SuperSU issue, as I'm guessing that's why I haven't got write access to the NTT code?
 

mrbeem

Senior Member
Nov 25, 2016
444
178
43
Hi. What exactly do you get in your ntcode error? Mine was FFFFFF,FF is not a proper code or something like that. Now, if your error is something else but not '0', you can just do the following:

1. Memorize or write down your error code ( in my case it was FFFFFF,FF)
2. go to /cust folder, mount it as R/W
3. Check what carrier subfolders folders you have in your cust solder (i had OPEN_EU, P4P_PL and a couple more)
4. Open file cust_path_mapping.cfg with TEXT EDITOR
5. Change the number/letter string before = of your desired carrier in the above mentioned cfg file to whatever it says in your ntcode error (my error message said FFFFFF,FF, i wanted the P4P_PL to be my carrier so i changed 26006,06=/cust/P4P_PL to FFFFFF,FF=/cust/P4P_PL).
6. Save changes, close, reopen the cfg file to check if your changes stick (if not, make sure you've enabled the R/W option in your cust folder).
7. Reboot

This should fix your problem. I tried this on 5 different devices and always worked.
 

wimmerfield

New member
Oct 9, 2018
3
0
0
Help changing NT using SVC menu

You can flash your countries Rom, not EU
The NT code showing for me on my LG G5 H850 from the SVC menu is
"3","234,30F,
28000000,FFFFFFFF,FF","234,38F,
28000000,FFFFFFFF,FF","234,33F,
28000000,FFFFFFFF,FF"
(I'm on UK Virgin I believe - 234,38) and my stock Android 7.0 Rom is H85020k_00_VMC_GB_OP_0501.kdz Now,
I want to update to Oreo using the open EU oreo kdz H85030a_00_OPEN_EU_OP_0910.kdz as an upgrade file is not yet available for my phone but I get the customer not found errors on boot even if I first flash the phone using the original stock open EU Android 7.0 file H85020a_00_OPEN_EU_OP_1030.kdz.
I have my phone unlock code so if I unlock the bootloader will that allow me to enter a new NT code in the SVC menu to stop the customer error message without me having to root the phone and edit the root CUST folder? Thanks in anticipation.
 
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cancunia

Senior Member
Dec 21, 2013
77
7
0
The NT code showing for me on my LG G5 H850 from the SVC menu is
"3","234,30F,
28000000,FFFFFFFF,FF","234,38F,
28000000,FFFFFFFF,FF","234,33F,
28000000,FFFFFFFF,FF"
(I'm on UK Virgin I believe - 234,38) and my stock Android 7.0 Rom is H85020k_00_VMC_GB_OP_0501.kdz Now,
I want to update to Oreo using the open EU oreo kdz H85030a_00_OPEN_EU_OP_0910.kdz as an upgrade file is not yet available for my phone but I get the customer not found errors on boot even if I first flash the phone using the original stock open EU Android 7.0 file H85020a_00_OPEN_EU_OP_1030.kdz.
I have my phone unlock code so if I unlock the bootloader will that allow me to enter a new NT code in the SVC menu to stop the customer error message without me having to root the phone and edit the root CUST folder? Thanks in anticipation.
Just wondered if you got any further with this? Oreo is now released for VM branded G5, but I'm wanting to use my VM branded phone on Three with WiFi calling. I was thinking about changing 1 of the 3 NT Codes (30,33,38) to 20 for Three but not sure if that's the best path forwards.
 

wimmerfield

New member
Oct 9, 2018
3
0
0
No progress with changing NT code

Just wondered if you got any further with this? Oreo is now released for VM branded G5, but I'm wanting to use my VM branded phone on Three with WiFi calling. I was thinking about changing 1 of the 3 NT Codes (30,33,38) to 20 for Three but not sure if that's the best path forwards.
Sorry - I wasn't able to resolve that issue but as you say the G5 has now received its Oreo upgrade which is really all I wanted. Good luck anyway ;)
 

aswertya

Senior Member
Apr 11, 2013
57
7
0
my device 860 h GCC middle East
I FLASH OREO VERSION sg (Singapore)
everything is work but ( NTCODE) PROBLEM ? ANY solution ? your discussion work for my device?
thank you
sorry bad English ?
 
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ayasat

New member
Dec 16, 2019
1
0
0
WARNİNG

1 - WARNİNG - Current version is not available for user. Can't find matched cust for NTCODE = (23430,02)
2- WARNİNG _ Current OP name by Buyer-code is (EEO_GB). But cannot find matched NT-code mcc/mnc (23430), subset (02)

Telefon yeniden başlatıldığında bu hatalar çıkıyor bir çözüm var mı acaba LG G5 H850 model cihaz
 

cancunia

Senior Member
Dec 21, 2013
77
7
0
Did anyone work out how to change the NT Code via the hidden menu? I tried downgrading to Marshmallow but still get a write error.
Thanks
 
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