Downgrade Android 10 to Android 9

hallo, please help me to downgrade my nokia 7.1 ta-1095 from android 10 stable to stock android 9 firmware. thanks

Downgrade Android 10 to Android 9

Mik94 Mik94
✭✭  /  edited December 2019

hallo, please help me to downgrade my nokia 7.1 ta-1095 from android 10 stable to stock android 9 firmware. thanks

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  • user1520881638007 user1520881638007
    ✭✭✭✭  / 

    You can visit any nearest Nokia care center and ask them to flash the software to Android 9 Pie

    Before going to care center have these

    - Bill of Purchase

  • singhnsk singhnsk
    ✭✭✭✭  / 

    Since its only 1 update, remove your Google account and then change to the inactive slot from download mode. That will boot to Android 9.

    Dont connect wifi at setup else you'll be forced to update before entering the Android System.

  • Mik94 Mik94
    ✭✭  /  edited December 2019

    I have flashed Android 10 Wirth SD Card, i try With ostLa and ADB to flash android 9 firmware but Has failed

  • Mik94 Mik94
    ✭✭  / 

    No Budy Help me? Please. I hate Android 10

  • singhnsk singhnsk
    ✭✭✭✭  / 

    As I said, just change to the inactive slot and then do a factory reset from recovery mode. It will be back to Android 9.

    Remember to remove the Google account beforehand and then don't connect WiFi during setup.

  • Mik94 Mik94
    ✭✭  / 

    hallo singhnsk, i has changed to the inactive slot and i do a factory reset from recovery mode, but nothing. it has boot on android 10. now i have another problem, i do factory reset an now i have

    -- Wiping data...

    Formatting /data

    Data wipe complete.

    E: Can't open /logfs/recovery/log: No such file or directory

    E: Can't open /logfs/recovery/log/last_log: No such file or directory

    E: Can't open /logfs/recovery/log/last_install: No such file or directory.

    why? and it' that bad? how to remove dat an how can i back to Pie? thanks


  • Hi everyone,

    Similar problem here. I'm inside a loop...download update then restart and error message, delete all my data and start over again...

    hallo singhnsk, what do you mean with "change to the inactive slot.." ?

    I've tried to enter into the command screen, and do a clean data, install from sdcard, and install from adb(this last one seemed to be working, installation successful...but after restart same problem...)

    Also another question for singhnsk, how do you remove the google account? I mean I have deleted all my data, but when the phone restarts it doesn't give me access to the phone itself, only emergency calls and update screen...in short it forces me to gave the phone a wifi and then it forces me to update...I can not skip that menu...otherwise I would be happy to stay on the previous android version....

  • singhnsk singhnsk
    ✭✭✭✭  / 

    @Mik94 Hi, that's not bad. Try to reboot after that and hopefully your phone will boot up.

  • singhnsk singhnsk
    ✭✭✭✭  / 

    @Juan Carmona Hi, you need to get to Android 10 and then remove your Google Account. After that change the slot and you should be back on Android 9.

    You can also try by not connecting to WiFi and instead using Mobile Data. Most phones wouldn't force a big update on a mobile data connection. That way you should be able to get out without having to install the update.

  • Juan Carmona Juan Carmona
    ✭✭  /  edited December 2019

    Hi @singhnsk , thanks for trying to help.

    I tried your second idea, leaving just the mobile data, and it didn't work, it still forces me to update the system.

    About the first idea I have the feeling that either I'm not understanding what you are trying to say or that the behaviour of my phone is different from what you expect.

    The behaviour of my phone is as follows: If i say yes to the update then the update finishes correctly(in case is not clear, if i don't say yes I'm trapped on that screen...), then the phone restarts and there i start having the problems, instead of starting correctly it shows me a screen with two options: try again or delete your data. If i try again i come back to same screen, if i delete my data then the phone starts correctly but I'm presented with a configuration screen that asks me for the wifi and then checks for updates...and there we are back to the infinite loop...I also tried downloading android 10 ota for nokia 7.1 and installed it correctly using adb sideload but then the phone restarts and I get the same black screen with the two options: try again or delete your data...again infinite loop...

    Any ideas?

    Thanks

  • user1520881638007 user1520881638007
    ✭✭✭✭  / 

    @Juan Carmona

    You can skip the set-up but at first moment ,this option will not be available and for that you need to do this

    • After Selecting SIM for Mobile/Cellular Data and Calls it will ask for Wi-Fi Set up and there select the mobile data
    • When it search for Android Updates,you might got the notification,just tap the back button and you will be in Internet Set-Up page
    • There you will see the Skip the Set-Up or Don't do this now option,Select that and accept to skip that

    Hope you got it

  • Mik94 Mik94
    ✭✭  / 

    not working! we need a stock android pie rom to flash with OSTLA!

  • user1520881638007 user1520881638007
    ✭✭✭✭  / 

    @Juan Carmona @sfh1975

    Then Visit to Nearest care center and get the device to Android 9 Pie Build

    Link for Care Center Location- https://www.nokia.com/phones/en_int/support/care-center-locator

    Carry these when visiting the care center

    • Purchase Bill
  • Yes I`m considering that for a while now, but I bought my phone in Germany and now I live in Canada...for what I have talked with Amazon is not so straight forward and I will need at least one month...So I'm not amuse about the Android 10 update process....

  • I want download nokia 6.1 plus because Android 10 very bugging

  • user1520881638007 user1520881638007
    ✭✭✭✭  / 

    @Deepankar Shakya

    For device downgrade visit the care center and get it downgrade to Android Pie

    • Carry Purchase Bill along with device

    After downgrade of the device from care center ,go to settings>system>developer settings*>automatic system updates>toggle off


    *To enable that go to settings>system>about phone and tap the build number 7 times

  • How to android 10 to Android 9 downgrade

  • user1520881638007 user1520881638007
    ✭✭✭✭  / 

    Visit the care center along with purchase bill and ask them to downgrade the device software to Android 9 Pie

    After downgrade to Pie ,Build Version need to be V3.51 or V3.54

  • Brajko Brajko
    ✭✭  / 

    How to downgrade from home? I dont have Nokia Care Centar nearbuy. :(

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