Cross-flashing between CSCs is a specialist operation with real risk and is not something we recommend to general users.

Why did my device update later than a neighbouring country?

Multi-CSC firmware bundles several regions into one package, and market approval schedules differ, so neighbouring countries can receive updates at different times.

CSC / Regions

Samsung CSC codes explained

A CSC (Consumer Software Customisation) code identifies the sales region or carrier customisation applied to a Galaxy device. It controls which firmware branch the device receives.

Every Galaxy device carries a CSC in its firmware string. The CSC is not simply the country the device is used in — it is the sales region or carrier customisation it was sold with.

Firmware is compiled and approved per CSC. Two identical handsets on different CSCs can receive updates at different times, and in some cases different feature sets.

Multi-CSC bundles package several regions into one firmware image, which is why some devices update earlier than neighbouring markets.

Recorded CSC codes

CSC	Country	Region	Carrier	Description	Firmware records
DBT	Germany	Europe	Open (unbranded)	German open-market devices.	2
BTU	United Kingdom	Europe	Open (unbranded)	UK open-market devices.	2
XEF	France	Europe	Open (unbranded)	French open-market devices.	1
ITV	Italy	Europe	Open (unbranded)	Italian open-market devices.	1
XEO	Poland	Europe	Open (unbranded)	Polish open-market devices.	1
EUX	Europe (multi)	Europe	Multi-CSC	Pan-European multi-CSC bundle covering several markets.	2
INS	India	Asia	Open (unbranded)	Indian open-market devices.	1
XAA	United States	North America	Open (unbranded)	US unlocked devices.	0

Frequently asked questions

What is a Samsung CSC code?: A CSC (Consumer Software Customisation) code identifies the sales region or carrier customisation applied to a Galaxy device. It controls which firmware branch the device receives.
Can I change my CSC?: Cross-flashing between CSCs is a specialist operation with real risk and is not something we recommend to general users.
Why did my device update later than a neighbouring country?: Multi-CSC firmware bundles several regions into one package, and market approval schedules differ, so neighbouring countries can receive updates at different times.