Huawei P8 Lite ALE-L02 Japanese variant has been upgraded to B572. users with custom version C635 can install this upgrade by following the guide given below.

Changelog:

• This update improves system security with Google security patches.

[Optimizations]

• Improved device security with Google security patches.

Huawei P8 Lite Marshmallow B572 Japan

• Firmware Download Link :  Huawei Server | Alternative Link
  
• File Size: 1.2 GB
• Release Date: 13-June-2017
• Build Number: ALE-L02C635B572
  
• Supported Model: ALE-L02C635 (Japan / open market)
  
• Firmware Type: Full Firmware OTA

Installation Guide

• Update will not remove your data, but just for safe side backup your data.
• Your phone should not be rooted
• Make dload folder on sd card
• Extract firmware file and copy update.app to dload folder.
• Dial *#*#2846579#*#* and select software upgrade & SDcard Upgrade,
• If code doesn’t work then switch off phone and hold 3 buttons (Volume up, volume down and power) to start update.
• Upgrade process will take 30 minutes to complete.