Xiaomi, faut-il rebloquer le bootloader

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Hello
Device: Mi10T Lite (gauguin)

I had problems to update OTA from e-1.8.1-s to e-1.9-s (see here ([MI10T Lite Gauguin] Soucis de mise à jour / OTA update failed, - #16 by saroumane38)).

Today I try to update to e-1.10-beta.2-s
OTA update doesn’t succeed. The system still announces 1.9.
I try to put back my backup of the /system/build.prop file because I had modified it (see here (Xiaomi, faut-il rebloquer le bootloader - #3 by saroumane38)).

New failure of the OTA update.

I then try to push the file via adb sideload without more success.

I could reinstall the STOCK ROM and then install v1.10 but I don’t want to do that every time I update.
I also noticed the following small changes in the settings :slight_smile:
image

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image399×824 71 KB

So a little help would be nice.

Thanks