This update includes improvements to functions as listed below.
The exact changes may differ depending on your device model, country, and service provider.
To get the best from your device, please keep your device up to date and regularly check for software updates.

GALAXY Tab A (SM-T550)

Build Number : T550ZCS1BRF1

Android version : Marshmallow(Android 6.0.1)

Release Date : 2018-12-14

- The latest Android security patch has been applied.
ㆍDevice security has been further enhanced.

Build Number : T550ZCU1BQI1

Android version : Marshmallow(Android 6.0.1)

Release Date : 2017-10-19

Removed the Baidu Maps app.
The latest Android security patch has been applied.
ㆍDevice security has been further enhanced.

Build Number : T550ZCU1BQB1

Android version : Marshmallow(Android 6.0.1)

Release Date : 2017-02-16

- Samsung Cloud service was terminated, after On January 20 day in 2017.
• Cloud interworking task of the My files and gallery was deleted.
- The latest Android security patch has been applied.
• Device security has been further enhanced.

Build Number : T550ZCU1BPL1

Android version : Marshmallow(Android 6.0.1)

Release Date : 2016-12-27

• Improved performance
- S Planner application is updated.
- S Browser application is updated.
- Sinaweibo application is updated.
- Device security has been further enhanced.
• The latest Android security patch has been applied.
- Device security has been further enhanced.

Build Number : T550ZCU1BPK1

Android version : Marshmallow(Android 6.0.1)

Release Date : 2016-11-15

· OS upgrade - Android 6.0 Marshmallow
· The new TouchWiz provides a brand-new visual design and enhanced usability
· Quick connect makes device connection more convenient
· Advanced Network power saving mode restricts background data and extends battery life
· Settings for the following have been reset: Email, Icon/Widget
※ After upgrade, Samsung Magazine will be replaced by Samsung Reader, and GameBox and Search icon will be deleted.
※ Android 6.0 Marshmallow does not support the Decrypt device function anymore.
If encryption function is not used anymore, Please disable encryption before the device is upgraded. (Settings →Lock screen and security → Other security settings → Disable encrypt device)
※ Some apps may be incompatible after OS upgraded. please update the apps to the latest version via Galaxy Apps.
※ If present, the Email shortcut on your home screen will be removed during the upgrade. It can be added to the home screen again after upgrading.
※ The functionality of some features may differ after the upgrade. Some apps may not function normally.
※ Errors during the upgrade may cause data loss. Back up any important data before upgrading.

Build Number : T550ZCU1AOK1

Android version : Lollipop(Android 5.0.2)

Release Date : 2015-11-13

- Improved performance with efficient memory management
. Optimized closing unused applications
. Notification of unstable applications
- Security Enhancements
- Improved the stability

Build Number : T550ZCU1AOF1

Android version : Lollipop(Android 5.0.2)

Release Date : 2015-06-10

- Device stability improvements, bug fixes.
- New and / or enhanced features.
- Further improvements to performance.