HELP: Can not delete/install "write-protected"?

[Pete]

When attempting to add new software or deleting old files, I receive and error.

"Error Deleting File
Cannot delete 'xxxxxx':
Access is denied.

Be certain that the file is not write-protected and is not currently in use."


I am unable to find any setting location in the phone that would even allow me to set/remove read/write protection.....

Files are clearly not in use as they are unused program archives. Does anyone have advice on this topic? Even when syncing to laptop i am unable to delete files from "Explore Device" (i also cant sync my contacts as of yet...so i dont want do the hard reset).