Galaxy

SGH-I257

Release I257UCS2BOI6

Latest

USA · ATTAndroid 4.4.2Built 1/4/2017

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

PDA: I257UCS2BOI6
CSC: I257ATT2BOI6
Country: USA
Changelist: 5857513
Build date: 1/4/2017
Added to Samfrew: 1/10/2017

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Available variants

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Regular

Standard + Premium

Explore file information, available TAR files, and download options in Samfrew Files.

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Supported networks

USA · 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

Roaming partners (3)

Internal use

MCCMNC99999

TEST

MCCMNC00101

Test network

AGMS Netherlands B.V.

MCCMNC20465