If you are getting the below error while updating the Plesk versions or installing the microupdates
ERROR: Unable to download the MD5 sum for the new Parallels Installer binary.
Not all packages were installed.
Please, contact product technical support.
Remove cache from /var/cache/parallels_installer/ and start autoinstaller again.
/usr/local/psa/admin/sbin/autoinstaller –select-product-id plesk –select-release-current –reinstall-patch –install-component base