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Finally.... Downgrade Huawei P9 from Android Nougat to Marshmallow {100% WORK}.

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By gelgel88, Junior Member on 18th November 2018, 03:18 PM
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in the last few weeks, my Huawei p9 had many problems cuz of the last update!
my battery drain was increased, also the mobile shutting down when I used the camera even if battery more than 30%.

i thought all of those problems cuz of update not the battery, when I searched many times I found many guys written the same problems!

i contacted Huawei customer services, they told me that Huawei removed all software from their sites cuz of wrong use from some customers


here are how to Rollback your device without any problems.

1) First, download Android Nougat Rollback Package for Huawei P9 from here
middle east http://download-c.huawei.com/downloa...&siteCode=kwen
europe http://download-c.huawei.com/downloa...24&siteCode=nl

2) Now create a folder dload in the root of your SD card and place the update.app file in that folder.

3)Now turn off your device.

4) Now press “Volume Up + Volume Down and Power Button” together. The update process will start automatically.

5) Now wait for some time to complete the process. Your firmware version should now be on “B300”.

6) Now download the full Marshmallow firmware from here

middle east http://huawei-firmware.com/rom/huawei-p9/eva-l19/324

or you can choose your eligible software from here

http://huawei-firmware.com/phone-list/huawei-p9

7) Now move the update.app file in SD card folder (Replace the rollback update.app file).

8) Now again press “Volume Up + Volume Down and Power Button” together to Downgrade Huawei P9 from Android Nougat to Android Marshmallow

9) Done.

This is the complete guide to Downgrade Huawei P9 from Android Nougat to Marshmallow. If you have any questions comment below.
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24th December 2018, 04:29 PM |#2  
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This will be helpful. I have some question.
1. In number 2 do you mean to unzip the files and put the dload folder to sd card and leave update.app untouched?
2. And can you elaborate number 7 please? Is it the same update.app in number 2 and do I need to replace it to the downgrade firmware?
3. And is it okay to downgrade when my phone is currently network locked? Will it affect my phone or should i have it unlocked first? Btw my bootloader is still locked and I have no root.
28th January 2019, 01:38 PM |#3  
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I love you man! I nearly gave up! Thank you SO MUCH!

PS- Can we update the phone after rolling back? Or Will the OTA updates brick my phone?
7th February 2019, 10:17 AM |#4  
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It works indeed
Many thanks. It works perfect. Il had to use Hisuite to move the file in dload.
Now I get a notification asking me to update to emui 5. Ik don't want to do so of course but I can't stop the notification. Has somebody an idea ?
10th February 2019, 11:33 AM |#5  
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Don't understand guy.. am on oreo and never had any problems ..
7th March 2019, 10:05 AM |#6  
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Hello,

If I do the downgrade, will I lose my pics on my phone ?

Thanks for you feedback.
3rd May 2019, 08:20 PM |#7  
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Reset Netwrok Settings
I was having the same issue ( sudden power-off when using camera or apps that use location), as well as the battery draining very fast.

I followed the steps suggested by Huawei to reset the network and (so far) it apperas to have resolved the issue. TBH its only been two days, but so far its looking good and did not require me to rollback or perform any other intervention. I'm too new to the forum to post a hotlink so you'll have to cut and paste it.

'https://consumer.huawei.com/in/support/how-to/newbie-guide/?resourceId=en-gb00718465'

I hope it helps!
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