Asus ZenFone Max Plus (M1) firmware update to Android Pie 9 – Version WW-16.02.1905.435

The owners of ZenFone Max Plus have finally awaited the firmware upgrade to Android 9 Pie. It has been an unfortunate chain of upgrade events with this phone for Asus, but mostly for the people around the world who bought it. First, people were disappointed because Asus claimed the phone to be a Battery King, but in reality it was “Meh..” at best. Then it was the fiasco with the upgrade to Android 8 Oreo. And of course the announcements and promises of new versions that were always broken.

Android Pie is now available for Asus ZenFone Max Plus (M1)

But the day has finally arrived and Android 9 Pie for Asus ZenFone Max Plus (M1) is available. It’s available from the official BIOS and firmware site and the version is WW-16.02.1905.435 or just 16.02.1905.435 for short.

Here’s what this upgrade brings:

Improve Items?
1.Android 9 (Pie) AOSP Beta version is now available for download. Please note that this version is “pure” Android system, and will not have ZenUI.
2.Please be aware that installing this system image on a device removes all personal data from the device, so please remember to back up your data first.
3.This is the Android 9 (Pie) AOSP Beta version, so the user experience will be different from Android 8 (Oreo). If you are used to and prefer using ZenUI, we recommend that you continue with the Android 8 (Oreo) version.
4.Android 9 (Pie) AOSP Beta version will not be supported with routine updates.
5.Update google security patch

But it’s a beta version

As you can read in the release notes this version is a beta. Usually that means that there are still some bugs present and that the version is not production polished. However, compared to Oreo version this would still be okay since it had so many bugs that it could barely be called alpha. Also the users from the forums report that the version is stable, makes the phone faster and more responsive. Users claim that the phone is heating less. One user reported that the camera quality is still the same (it was having trouble focusing for some owners) and one user reported that the phone is still quite hot. There are some reports of Android Pie gestures not working. Other reports seem to be very positive, especially compared to the Oreo version.

Pure Android Pie

What can be also read from the above upgrade list is that the version of Android Pie that is coming to ZenFone Max Plus is pure. What does that even mean? It means that there is no ZenUI, a user interface that Asus lays over the original “out-of-the-box” Android that is provided by Google. In practice, that means that the pure user interface will be cleaner, more Google-like. Also note that some of the Asus apps will probably missing, like the Asus Backup, Asus Support, Asus Files, Asus Gallery and other Asus branded apps. Instead of these apps the stock Google apps should be available, like Android Gallery. Also some Asus specific options could be missing, but I can’t recall any on this phone that were worth mentioning. Maybe one was Battery boost, or the Memory manager.

How to update?

Asus also gives the steps how to update the phone via a complete manual update. Note that this process will delete all your apps, data and photos on the phone – it’s the same as doing a factory reset.

At the time it’s not yet clear if this update is available via the over the air update (OTA), but since it’s a beta it’s probably not.

Try it out and report your findings here in the comments!

10 thoughts on “Asus ZenFone Max Plus (M1) firmware update to Android Pie 9 – Version WW-16.02.1905.435

  1. Guilherme Aworld

    Hey, I downloaded the Android Pie, and I can say that is MUCH better than the Oreo. However it’s missing the gestures and the camera still the same!
    But the smoothness and the low heating are worth it

  2. Post author

    Guilherme, that’s great news! What if you compare it to Android 7 that was on the phone before Oreo?

  3. Adalberto Rodrigues

    I downloaded the Android Pie [Beta Version], my impressions at my phone (detail: I lives at Brazil and I also buyed at Brazil, maybe different countries don’t have the same problems):

    Advantages: Faster than Oreo and Sounds improved too much.
    No changes: Heating and Camera.
    Disadvantages: Lost gestures, Problems with Fingerprint, Only Music buyed at Google Play Store Music was recognized and some documents, pictures inside MicroSD not recognized.

    That was my impressions and Asus provided a Downgrade version (Pie to Oreo) yesterday (2019/09/12). I believe the responsible people of this website will share this information better to you. Have a nice weekend everyone!!!

  4. Post author

    thanks for your feedback! I’m sure it will help other owners of the phone too.
    Does the downgrade process work without problems?
    Have a nice weekend!

  5. Adalberto Rodrigues

    I am trying right now to downgrade. The step-by-step provided by Asus only worked until Step 6 for me, after that show an error message (something like that). I am tranfering all my files to PC, because I will reset my Micro SD card, maybe is a problem with this. As soon as possible I will told to you if worked.

  6. Adalberto Rodrigues

    Hi guys. Now, I can tell to you about downgrade, like I promised. My former MicroSD was my problem for dowgrade. I buyed a new MicroSD and I repeated the step by step again and it worked without problems. My Zenfone Max Plus M1 backed to Oreo and works normally. Conclusion: Let’s wait Asus fix all problems in Pie before install this system and launch the final version, without bugs and huge problems like I shared with you before (maybe a new disadvantage about Pie Beta Version: my former MicroSD never had before any problems until this update, it is a thing to think before install. Don’t forget to save your files and back up your data before Beta Update).
    I hope I have helped with my experiences about this phone. Have a nice weekend everyone!!!

  7. Celso


    Google Translate to English:
    I downloaded the AOSP 9 beta version, I regretted that the phone was not connected. Ok the other problems and normal bearable. After a month he made the call again. I am waiting for the final version because I tried to return the old version and could not because the memory card does not appear in the reset menu.

  8. Gil Lima

    Pessoal como se faz o downgrad dessa versao Pie, ja baixei, e agora como deve proceder?

    Google Translate to English:
    Guys, how to downgrade the Pie version, I already downloaded it, and now how should I proceed?

  9. Post author

    Hi, from what I’ve read on the forums, the best way to downgrade from Pie is to get the latest version of Android 7 and re-flash the phone. You will lose all the data (make a backup!) but the phone will work better again.

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