Galaxy

SGH-I257

Firmware I257UCS2BOI6

Latest

United States · ATTAndroid 4.4.2Built Jan 4, 2017

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

United States · CSC ATT · 9 carriers in 2 countries

What is CSC?

CSC is Samsung's region and carrier customization. The networks below are included in this release.

AT&T

MCCMNC310380

AT&T Mobility

UMTS 850UMTS 1900GSM 850GSM 1900

AT&T

MCCMNC310150

AT&T Mobility

UMTS 850UMTS 1900GSM 850

AT&T

MCCMNC310170

AT&T Mobility

GSM 1900

AT&T

MCCMNC310410

AT&T Mobility

5G 8505G 37005G 39000LTE 700LTE 850LTE 1700LTE 1900LTE 2300UMTS 850UMTS 1900GSM 850GSM 1900

AT&T

MCCMNC310560

AT&T Mobility

GSM 850

AT&T

MCCMNC311180

AT&T Mobility

UMTS 850UMTS 1900GSM 850

Internal use

MCCMNC99999

TEST

MCCMNC00101

Test network

AGMS Netherlands B.V.

MCCMNC20465