Download Huawei P8 Lite L21 single SIM B597 EMUI 4.0.3 Marshmallow firmware

Hours ago, I talked about the new B596 Marshmallow firmware is arriving in Huawei P8 Lite L21 with support for dual SIM. It’s single SIM version’s turn now. Though they are both Android 6.0 Marshmallow with EMUI 4.0.3, the new build number of the single SIM version of Huawei P8 Lite ALE-L21 is ALE-L21C432B597 (B597). Similarly, the B597 update includes the latest April 2017 Google Android security patches and optimized theme icons. It brings also new features to some app like Email, Calendar, and notepad, such as more years, local calendar and global holidays for the Calendar, add more. Of course, the full firmware file is now available for download.

Firmware Information

  • Android Version: Android 6.0 Marshmallow
  • Emotion UI Version: EMUI 4.0.3
  • Android Security Patch Level: 01 April, 2017
  • Baseband Version: Pending
  • Kernel Version: 3.10.86
  • Model Number: Huawei P8 Lite (ALE-L21)
  • Support Network: LTE 4G
  • Build Number: ALE-L21C432B597
  • Build Date: March, 2017
  • Country: Global
  • File Name:,
  • Uploader: Huawei for, Huawei.Blog for

Update Notes

  • The updated B597 firmware version based on Android 6.0 Marshmallow with EMUI 4.0.3
  • Adds a feature to prioritize emails
  • Adds more years to the perpetual calendar
  • Adds Local calendar and Global holidays in Calendar
  • Adds a feature to add and share contacts using QR code
  • Adds a feature to share notes as text, image, or email in Notepad
  • Optimized email login by configuring parameters automatically
  • Optimized themes icon to be more consistent with the system
  • Improved device security with Google Android security patch level on 01 April 2017

Firmware Download

For Huawei devices, it’s easy to install the full firmware file, here is a simple guide to help you.

Installation Guide

  • Unzip firmware file you downloaded until you find rom file UPDATE.APP
  • Copy UPDATE.APP to dload folder in the top level of the external SD card, if there is not dload folder, please manually create it
  • Open project menu from your Huawei phone
  • Software Upgrade
  • SD card

If you need a better guide, please come forward to this detailed installation guide.

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