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Downgrade Mate 7 (L09) Marshmallow to Lollipop OS [Europe]

May 7, 2016 By Asif 7 Comments Filed Under: Android, Firmware

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You can now restore your Ascend Mate 7 (MT7-L09) from the new Marshmallow update back to stock Lollipop firmware using the official transitional firmware, build B500, released by Huawei.

B500 Rollback

Rollback Details

  • Device: Huawei Ascend Mate 7
  • Model: MT7-L09
  • Codename: Jazz-L09
  • Android: v6.0 → v5.1
  • Firmware: B500
  • Build Number: MT7-L09C900B500
  • Release Date: 5.05.2016
  • Region: Europe
  • Branding: WEU Generic
  • Type: Transition firmware
  • Status: Official
  • File Name: Mate 7 (MT7-L09)_rollback transition package_From Android 6.0 to Android 5.1.zip

Download Link: Official Mirror | Size: 261.76 MB

How to Downgrade

Step 1: Download the transition firmware package from above and extract it.

Step 2: Copy the extracted dload folder to your phone’s internal memory (top-level directory).

Step 3: The rollback process will wipe out all the data stored in the internal memory, so do remember to take a full backup first.

Step 4: Turn your phone off. Now reboot while holding Vol down + Vol up + Power for a few seconds till the installation starts.

Step 5: Once your device powers up, go to Settings > About Phone and confirm that the firmware version is now B500.

Step 6: Now download the appropriate Lollipop like B331, copy its Update.app to internal memory and install it the same way as above.

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Tagged With: Downgrade Ascend Mate 7 to Lollipop, Huawei, Huawei Ascend Mate 7 (L09), Huawei Ascend Mate 7 B500 Rollback Package, Huawei Firmware Updates, MT7-L09

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