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Software Update 2.20.40.13x for Asus Zenfone 2 Starts Rolling

The first devices of the Zenfone 2 series i.e. ZE551ML & ZE550ML are receiving a new software update starting today. It’s been 50 or so days since the last update was pushed and users who were hoping of an Android OS upgrade (to 5.1) are going to be disappointed because the new update still carries Android 5.0 as its core. Today’s update pushes the software version from 2.20.40.9x to 2.20.40.13x which isn’t really satisfactory given the time taken to deliver this update.

Zenfone 2 Update 2.20.40.13x  – Changelog

The latest update 2.20.40.130 for ZE550ML and 2.20.40.139 for ZE551ML bring the following set of changes and improvements.

  1. 1 Improve screen turn into black during phone call issue.
  2. Fix Miracast frame rate drop issue.
  3. Fix NFC connect issue.
  4. Fix network data warning notice don not come up issue
  5. Fix Wi-Fi connect issue
  6. Fix 3G cannot camp to H plus in Laos and Paraguay issue.
  7. Fix the coming call issue when using Bluetooth earphone.
  8. Fix Unlock Tool issue.
  9. Improve service stability of modem
  10. Fix the charging issue of roaming to LTE when data roaming option disabled
  11. Fix boost stability issue
  12. Fix the issue that user would still receive the notifications from Auto start denied Apps
  13. Fix ASUS Mobile Manager data usage restriction issue
  14. Fix ZenMotion Shake Shake screenshot issue
  15. Fix URL recognition issue in Messages
  16. Modify HK Chinese strings
  17. Fix IME issue when open Yahoo PC version webpage by ASUS Browser
  18. Fix countdown alarm issue after set in Snap View
  19. Fix string issue in Theme Apps
  20. Fix charge remained time display issue when quick charging
  21. Fix SIM PIN lock issue in Cover View
  22. Modify Quick charge notification UI layout
  23. Fix System UI stability issue
  24. Fix Power saver settings issue
  25. Fix JP FlipFont issue
  26. Fix Battery Simplified Chinese string issue
  27. Fix ASUS Mobile Manager data usage calculation issue
  28. Improve Auto Start Manager stability
  29. Remove BookLive from JP SKU
  30.  Fix Documents UI stability issue
  31. Fix Snap View UI issue and improve its performance when install 3rd party apps
  32. Improve Hand Writing accuracy
  33. Fix flashlight turn-off issue when double tap power key
  34. Fix Power Saver Ultra saving mode notification settings issue

There are a bunch of new features as well:

  1. Add phone number editing function in Dual SIM settings
  2. Add 128G SD card turn into Power Saver mode function.
  3. Add Latvian and Lithuanian languages

Manually Install 2.20.40.13x Update to Zenfone 2

The updates are being rolled out globally. Your device will notify you about the update in the coming hours and will also start downloading automatically depending on your settings. You can force a manual check for the updates by heading to Settings> About> System update and tapping on Check Update.

If you don’t get the update within a week, you should approach the Asus website to download the full ROM package and install it manually.

Meanwhile, we are still hoping that Asus will offer Android 6.0 Marshmallow for Zenfone 2 devices because they deserve it.

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