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Thanks for the replies.
Unfortunately I've just discovered an unpleasant truth about this device: once you've installed Android 11, you simply cannot go back. Xiaomi prevented it somehow. This is also confirmed in an XDA Develpers thread. I didn't know about this and I bricked the phone TWICE while trying to install two different stock Android 10 ROMs. The flashing itself is successful, but the phone doesn't boot. To unbrick it, you have to disassemble the phone, go into EDL mode........
Bottom line: since the current Ubuntu Touch port is based on Halium 9, only those owners who haven't updated the phone to Android 11 can use it. Downgrading from Android 10 to 9 should be still possible, but I cannot test it for obvious reasons.
As a result of this, I decided to sell the phone. I will probably get an Oneplus 6, since there's hope of using it with the mainline kernel soon thanks to community efforts.
Cheers.
Michele -
@eigen-mike Might be an idea to change the title of the thread to Warning for if that is the case. Which I have no reason ti doubt.
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@lakotaubp unfortunately I cannot change the title, because I'm not the author of this thread.
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@eigen-mike Good point missed that.
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@mito77 I have taken the liberty to add to your thread title. Hope that is ok as I think it is quite important info. If you disagree I can remove it.
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@sami6767
That's not how the community porting effort works...Please read/search forum before posting, especially pined : https://forums.ubports.com/topic/2299/new-devices
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@sami6767 Please do not hijack threads with requests for device porting. The info you need for porting is here and it is not a straight forward process https://forums.ubports.com/topic/2068/halium-first-steps Have a look round the forum someone may be doing or thinking the same thing and maybe you could help each other. For now I will delete your post. Please feel free if you start a port to post in the Porting section.Thanks.
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hi ! I'm back for a short moment. Do you know if @Youssef_Jacobo have an easily solution for flash or downgrade Android 11 to 9 ? Because on the manual of ubports . I read : Important Notice
Before installing you'll have to downgrade to stock Android 9 firmware in case you're running Android 10. IF YOU'RE ON ANDROID 11, DO NOT ATTEMPT TO INSTALL UBUNTU TOUCH, OTHERWISE YOU'LL BRICK YOUR DEVICE.Video youtube tutorial IS required for eager man like me.
And me I have Android 11. About Laurel Sprout.
Link : https://devices.ubuntu-touch.io/device/laurel-sprout/
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@mito77
Sadly, i think you can't downgrade from android 11 on xiaomi devices, it's xiaomi anti rollback policy, not only you can't downgrade when bootloader locked like google policy with latest android versions, but xiaomi added an "extra" protection so you can't downgrade even with bootloader unlocked, and if you attempt to do so, you hardbrick...Maybe i'm wrong, let's hope someone gives you a solution.
https://c.mi.com/thread-2098701-1-0.html
If there is no way to downgrade from 11 to 9, you'll have to wait for a Ubuntu Touch Halium 11 port (= android 11 based) for your device.
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@Keneda hi, you and old people. One year later, so does it work now for install ubports on Xiaomi mi A3 Android 11 ? Thanks you ub touch community.
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@mito77
Still halium 9 on device page.
https://devices.ubuntu-touch.io/device/laurel-sprout