Same problem was happening with me. In my case it was showing
i manually transferred the file to the device and it shows the update error. so first i uninstalled the application (test) and then tried and it was working then.Could not install from package "C:\Data\test.sis" on device: General OS-related Error
may be its the same problem with you
so try to find an application with name new (as in your case it is trying to install 'new.sis') and uninstall it first.
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