Why the message "Error: Specify a Windows update package" while updating appears?

I try to install Update 1 for 2021a version offline and, as always, run

update_installer.exe -updatepackage <package_folder>

in the command line, but receive (in the log file) the message:

(Apr 28, 2021 11:30:29) Error: Specify a Windows update package.

As I suppose, Matlab updater uses Windows functions for launching update program, but something goes wrong. I have found no suggestions regarding this issue yet. Are there any ways to tackle the trouble?

[Jan]

Just to be sure: You have replaced "<package_folder>" by the path of the package folder?

[Konstantin]

Sure, the palacehoder <package_folder> was replaced.

I have been installing Matlab updates in such a manner about 3 years.