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Question Help changing CSC code - flashing BTU keeps DBT CSC?

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Apr 2, 2012
Hi, I have a new A52s, I bought it off Amazon, and didn't realise it was a grey import. It works fine with my provider (iDMobile in the UK), apart from WiFi calling. iDMobile say the problem is because it's German firmware (DBT CSC), so I started reading up on how to change this. All of the tricks using the phone dialer codes no longer work, so I downloaded the UK Unbranded firmware (BTU CSC), and flashed with Odin. However my phone remains as DBT. I ran Phone Info, and that says that my current firmware is only DBT CSC, with no others available. I did read somewhere that you could get a CSC change if you repartitioned with Odin while flashing. Does anyone know if that's the case? Or are there other approaches that I need to use to change the CSC?


New member
Apr 17, 2008
I'm afraid I don't have an answer but I have the same question.

Am looking to buy an A52S 5G primarily as it's supported by my carrier for Wifi calling but carrier price is extortionate.

Flashing carrier firmware worked before on an old S7 but I'm not sure about doing the same on an A52s 5G.

How did you get on OP ?