Preparing "Install Android Emulator (revision: 30.3.5)". Downloading https://dl.google.com/android/repository/emulator-linux-7033400.zip problem code example
Example: where to place /android/repository/emulator-windows-6962233.zip file
I had this similar issue below worked for me. The solution for this is:
1. Run Android Studio as Administrator.
2. Re run the update.
reference : https://stackoverflow.com/questions/43705311/error-with-sdk-package-download-in-android-studio