Software update for the AT&T Trek 2 HD (K88)
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Software update for the AT&T Trek 2 HD (K88)

Latest update
Getting started
Update & verify software
Previous updates

Latest update

The updates
  • What's changing: Android device security updates

The details

  • Release date: April 10, 2019
  • Android version: 7.1.1
  • Security patch level (SPL): August 1, 2018
  • Baseband version: K88H01
  • Build number: K88V2.0.0B23
  • Hardware version: u91B
  • File size: 107.66MB

Getting started

  • You can download the update via Firmware Over the Air (FOTA).
  • You must connect your device to Wi-Fi® to download the update.
  • Although there should be no impacts to settings or data, we recommend that you back up your media files to an SD card, a computer, or using a favorite application, prior to upgrading the software.

Update & verify software

To update the software
  1. Make sure your device is fully charged and connected to Wi-Fi.
  2. From the Home screen, swipe down from the top of the screen and tap the Settings icon.
  3. Tap AT&T Software Update, then Check for Updates.
  4. Follow the on-screen prompts to download and install the update.
  5. The device automatically restarts once the new software successfully installs.

To verify the software update
  1. From the Home screen, swipe down from the top of the screen and tap the Settings icon.
  2. Scroll to and tap About tablet.
  3. The device has the latest software if the Android version, Baseband version, and Build number match the current update details.

To troubleshoot the software update

Previous updates

DateDetails
Aug. 6 2018
  • What's changing: Android device security updates
  • Release date: August 6, 2018
  • Android version: 7.1.1
  • Security patch level (SPL): May 1, 2018
  • Baseband version: K88H01
  • Build number: K88V2.0.0B20
  • Hardware version: u91B
  • File size: 74.10MB
Nov. 14, 2017
  • What's new: Update to Android 7.1.1 Nougat
  • What's changing: Default screen timeout fix and Android security updates, including KRACK Wi-Fi vulnerability fix and BlueBorne fix (on SPLs Sept. 1 or later)
  • Android version: 7.1.1
  • Security patch level (SPL): November 1, 2017
  • Baseband version: K88H01
  • Kernel version: 3.10.84
  • Build number: K88V2.0.0B17
  • Hardware version: u91B
  • File size: 52.66MB-979.27MB
March 27, 2017
  • What's new: Android device security updates
  • Android version: 6.0.1
  • Security patch level (SPL): March 1, 2017
  • Baseband version: K88H01
  • Kernel version: 3.10.84
  • Build number: K88V1.0.0B33
  • Hardware version: u91B
  • File size: 66MB
Jan. 31, 2017
  • What's new: NumberSync fixes
  • What’s changing: Android device security updates
  • Android version: 6.0.1
  • Security patch level (SPL): November 1, 2016
  • Baseband version: K88H01
  • Kernel version: 3.10.84
  • Build number: K88V1.0.0B31
  • Hardware version: u91B
  • File size: 48MB-122MB
Nov. 1, 2016
  • What's new: Fullscreen – Mobile Video Service
  • Android version: 6.0.1
  • Security patch level (SPL): August 1, 2016
  • Baseband version: K88H01
  • Kernel version: 3.10.84
  • Build number: K88V1.0.0B29
  • File size: 6MB-118MB
  • Hardware version: u91B
Oct. 4, 2016
  • What’s new: NumberSync and Android security updates
  • What’s changing: Screen sensitivity improvement to work with Bodyguardz screen protectors
  • Android version: 6.0.1
  • Security Patch Level (SPL): August 1, 2016
  • Baseband version: K88H01
  • Kernel version: 3.10.84
  • Build number: K88V1.0.0B28
  • Hardware version: u91B
  • File size: 1,222MB

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