Huawei Mate 9 Lite BLL-L23 Rollback Nougat to Marshmallow

Huawei Mate 9 Lite BLL-L23 users can now rollback to marshmallow version by following the guide given below. even though this rollback is for BLL-L22 but this also works with BLL-L23, tested by XDA user. his post can be seen here


Huawei Mate 9 Lite Rollback Nougat to Marshmallow

Installation Guide

  • Download rollback package
  • Extract downloaded rollback zip file
  • Make dload on sdcard
  • Copy to dload folder
  • switch off phone
  • Hold volume up, volume down and power until installation starts
  • if rollback install successfully, you will be able to see build number C900B300
  • Now Flash download marshmallow firmware, extract zip file
  • Copy to dload folder on sd card
  • Hold volume up, volume down and power until installation starts, wait for phone to complete installation, and you will be running marshmallow

Mutahhar Bashir

Passionate blogger, have excellent problem solving skills, quick learner, love to accomplish difficult tasks, improving my skills while helping others through this blog.

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28 Responses

  1. Diego says:

    Hi, do you tested this? after this procedure i will receive the official OTA of Android 7.0 ?


  2. Diego says:

    one more thing, you put 3 download links, we have to flash the 3 in order ?

    1) rollback package, then
    2) Marshmallow Stock Rom, then
    3) Marshmallow version: BLL-L23C605B120

    that is the correct way?


  3. Jorge says:

    Hello, I have a problem. When I did the upgrade using the other post I get a compilation number NRD90M test-keys. I don’t know how to fix it because I don’t know which is the data file you are saying. However, I try to install the rollback package and it doesn’t work. The compilation number still the same NRD90M test-keys. Please help me.

  4. Harvy says:

    I have bll-l23 latín América

    Hola la hice rollback con éxito, pero el detector de huellas no funciona y la compilacion es bll-l23C605B120-log
    Y al parecer es una.versión de prueba beta.

    Fingerprint not work
    Compilación with -log
    Beta versión?

  5. Harvy says:

    same thing..

  6. Josh says:

    Hi Mutahhar,
    Link of the Marshmallow are not available yet, I can not find it in other place, can you update it again? Thanks in advance

  7. Laucha says:

    Links not work

  8. Josh says:

    Anyone could rollback to MM?
    When I install build C900B300, my Mate restarts and seems it´s installed correctly, however, at the moment to confirm on settings, it keeps the same “test Keys” version.

    • If rollback package installed successfully, install marshmallow after that

      • Josh says:

        Hi Mutahhar,
        That´s the problem, for any reason, the rollback package is not installed succesfully, I follow all directions step by step, it seems everything is OK, after insert a sd card with dload folder and update inisde it, I made the 3 button process and the package runs 100%, it restarts, but any change it´s reflected, any idea ho to fix it and what´s is missing?
        Thanks in advance for your support, I´m stuck in this two weeks ago!

  9. necatorem says:

    i’m stuck in NRD90M test-keys after try to update to nougat

  10. solandapp says:

    install the version of the roolback with success but it does not let me enter in recovery mode or to install the

  11. Marco Antonio says:

    Gracias, me sirvió, aunque sea una versión beta va bien, hasta ahora ningún fallo detectado.

  12. John Latorre says:

    Muchas Gracias…. thank you very much

  13. Diexgo says:

    Very useful article !, really works as described. Went from “NRD90M test-keys” in the begining to the “BLL-L23C605B120-log” at the end of the process. Now i will see how to keep updating for newer version.

    Will it be possible to update using Firmware Finder if installed for newer updates ?.

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