How do I change CSC ?

[KarlReed]

How do I change CSC ?

Want to use Samsung Wallet 

[BandOfBrothers · Accepted solution]

Hello @KarlReed 👋 

May I assune you've imported the phone to use in a different country 🤔 

Changing the csc can come with caveats and does not always guarantee it can then be used. 

I imported a Samsung Note²⁰ phone from Hong Kong into the UK ,and ended up using Google Wallet. 

If your mind is made up to change the csc then look on sites such as xdadevelopers.com and sammobile.com for insight on how to do this. 

Be aware if things do go wrong then you can end up with an unstable phone that Samsung may not touch if the phone has been imported. 

If i can be of any further help please don't hesitate to ask  😎 

[Moiramon · Accepted solution]

Search for SamFirm tool. Then have a look on YouTube how to do it. The firmware on your phone will only give you certain CSC options to change to. So if it's US spec phone you can't change it to EUX CSC for instance. So it still probably won't work.

[TechZilla · Accepted solution]

Personally I would avoid this, years ago it was easier to do but now it's more complicated. It might cause certain apps to stop working due to security tripping of knox and Samsung won't touch it as its been tampered with. Sammobile, xda and reddit are the best sources if you insist, good luck my friend I honestly hope it works out for you.

[galaxy4public]

Changing CSC itself cannot trip Knox, the shady ways of doing the change can.  For example, SamFW tool is behind the scenes is just using AT modem commands to do its job.  I could not use the tool since I am on Apple Silicone device, so I just did it manually via a terminal and documented the steps: https://dmitry.khlebnikov.net/2025/10/09/samsung-csc-change-using-modem-commands/ -- as you can see from the article, you can easily switch back and forth from one CSC code to another, no harm done.