• https://fccid.io/EEC/RU0000051682

• https://www.getdroidtips.com/redmi-note-8-2021-bluetooth-problem/
• https://www.gizmochina.com/2021/05/17/redmi-note-8-2021-receives-bluetooth-certification-launch-seems-near/
• https://launchstudio.bluetooth.com/ListingDetails/128892
• https://xiaomi.eu/community/threads/bluetooth-issues-with-android-12.64390/#
• https://forum.xda-developers.com/t/disable-bluetooth-a2dp-hardware-offload.3856557/

• https://xdaforums.com/t/adb-install-requires-mi-account-can-global-rom-avoid-this.3881625/#
• https://stackoverflow.com/questions/47239251/install-failed-user-restricted-android-studio-using-redmi-4-device/49485273#49485273#
• https://android.stackexchange.com/questions/185116/enable-install-via-usb-without-creating-mi-account#

• https://www.reddit.com/r/Xiaomi/comments/8yo6el/im_hating_miui_as_a_developer/

adb: failed to install ...: Failure [INSTALL_FAILED_USER_RESTRICTED: Install canceled by user]