Install Android Sdk Platformtools Revision 2801: Hot!
Create a dedicated folder for this specific version (do overwrite your current Platform Tools if you have a newer version installed system-wide).
To install this exact version, you must download the standalone ZIP package rather than using the standard "latest" update button in Android Studio. SDK Platform Tools release notes | Android Studio install android sdk platformtools revision 2801
November 2018 (Legacy Reference) Subject: Deployment of adb and fastboot binaries for Android Debugging. Create a dedicated folder for this specific version
Click and paste the full path to your extracted folder (e.g., C:\platform-tools ). Click OK on all windows to save. For macOS and Linux: install android sdk platformtools revision 2801
./adb reboot bootloader