CSC change - Samsung Galaxy Note 8 Guides, News, & Discussion

I got the Verizon Note 8 and flashed the T-Mobile firmware using the carrier change tutorial here. It has all the T-Mobile branding but it still has traces of Verizon:
1. download mode has CSC of VZW
2.settings -> about phone service provider SW ver it says TMB/TMB/VZW
How do I get those 2 changed to TMB so it is 100% like a phone that came from T-Mobile?

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The 3rd code is the original CSC for the phone & can't be changed.... well unless you have root you can try.
Why do you want to change it? It won't really affect anything.

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Do have root that doesn't break the Knox flag?

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Generally yes but I don't know what variant you have. Assuming you have a US U variant then no but the current root method has other drawbacks to be considered.

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shouren04 said:
Generally yes but I don't know what variant you have. Assuming you have a US U variant then no but the current root method has other drawbacks to be considered.
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Us 950U
What other drawbacks?

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bogdi1988 said:
Us 950U
What other drawbacks?
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Read disclaimer 3 for SamFAIL, you'll have decide if they are drawbacks for you.

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shouren04 said:
Read disclaimer 3 for SamFAIL, you'll have decide if they are drawbacks for you.
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Thanks! I'll look! If I end up rooting, how do I get the other 2 variables changed in the CSC?

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bogdi1988 said:
Thanks! I'll look! If I end up rooting, how do I get the other 2 variables changed in the CSC?
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I'm not sure exactly, I never looked into it much. IIRC you have to edit nv files in the efs folder. Mine is TMB/TMB/XEF, I never cared really as there's no reason to try & change it. The first 2 are all that really matters.

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If you follow the guide correctly you can completely change your phone to a different carrier. I got my Note8 from Xfinity, canceled service and got it unlocked. I followed the guide here and now have a phone with firmware exactly the same as a Verizon Note8, no traces of the Xfinity firmware.

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hann1balk1ng said:
If you follow the guide correctly you can completely change your phone to a different carrier. I got my Note8 from Xfinity, canceled service and got it unlocked. I followed the guide here and now have a phone with firmware exactly the same as a Verizon Note8, no traces of the Xfinity firmware.
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You misunderstood my question . I already have that and followed the guide but there is still a small remnant of the old carrier. Look in your about section on your phone.

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Everything looks fine, wanna take a screenshot and show me what youre talking about?

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See attached

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bogdi1988 said:
See attached
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This last CSC code is hardcoded in the device to show where was originally bought it will never change without root.

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Easy fix if you're rooted....but not worth rooting if that's all you want to change....however you could root, then change the value and then return to stock unrooted and the setting will stick.
Sent from my SM-N950U using XDA-Developers Legacy app

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louforgiveno said:
Easy fix if you're rooted....but not worth rooting if that's all you want to change....however you could root, then change the value and then return to stock unrooted and the setting will stick.
Sent from my SM-N950U using XDA-Developers Legacy app
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How do I change it if I root? That was my initial plan - root, fix, unroot.

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bogdi1988 said:
How do I change it if I root? That was my initial plan - root, fix, unroot.
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Edit the 3 letter code in the sales_code.dat (the one in the carrier folder phone is)
Example i have a tmobile branded phone to change i would navigate to /system/omc/TMB/etc and in the "etc" folder open sales_code.dat with text editor and change the 3 letter code to what you want.

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louforgiveno said:
Edit the 3 letter code in the sales_code.dat (the one in the carrier folder phone is)
Example i have a tmobile branded phone to change i would navigate to /system/omc/TMB/etc and in the "etc" folder open sales_code.dat with text editor and change the 3 letter code to what you want.
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Thank you!
Does that also fix the bootloader info? When you go into download mode, it shows VZW there also.

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bogdi1988 said:
Thank you!
Does that also fix the bootloader info? When you go into download mode, it shows VZW there also.
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I don't know about that....maybe someone else can answer...

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bogdi1988 said:
Thank you!
Does that also fix the bootloader info? When you go into download mode, it shows VZW there also.
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This information is stored in the EFS partition as this code is the original provider of the phone.
You can change it but is a bit risky losing IMEI.
I dont know how. This might help
https://forum.xda-developers.com/showthread.php?t=2670084
And this
https://forum.xda-developers.com/galaxy-s8/how-to/switch-to-carrier-firmware-100-t3609487

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louforgiveno said:
Edit the 3 letter code in the sales_code.dat (the one in the carrier folder phone is)
Example i have a tmobile branded phone to change i would navigate to /system/omc/TMB/etc and in the "etc" folder open sales_code.dat with text editor and change the 3 letter code to what you want.
Click to expand...
Click to collapse
Have you tried that & does it actually change the 3rd CSC? Cause that's not the way to change it that I'm aware of. My sales_code.dat is TMB but my 3rd CSC has always been XEU.
bogdi1988 said:
How do I change it if I root? That was my initial plan - root, fix, unroot.
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I could be wrong but I don't think you can root, make changes, then unroot & keep the changes.
---------- Post added at 12:56 PM ---------- Previous post was at 12:52 PM ----------
holifo said:
This information is stored in the EFS partition as this code is the original provider of the phone.
You can change it but is a bit risky losing IMEI.
I dont know how. This might help
https://forum.xda-developers.com/showthread.php?t=2670084
And this
https://forum.xda-developers.com/galaxy-s8/how-to/switch-to-carrier-firmware-100-t3609487
Click to expand...
Click to collapse
The 3rd CSC is stored in the EFS partition but it's not the ones in /efs/imei, I believe the third CSC is stored in the nv files & I think the 3rd CSC is the same as what shows up in download mode.
I still don't understand why the OP wants to change this, it won't really affect anything.