Deep Freeze is a software. It freezes a computer’s hard drive state. Any changes a user makes—installing software, deleting files, changing settings, or downloading malware—are completely erased upon reboot. The system reverts to its original frozen state every time.
A: No. You must thaw, install updates, then refreeze. But Windows 7 no longer receives updates, so this is moot. Windows 7 Deep Freeze Full Download
Since no new security patches exist, you rarely need to thaw for updates. Thaw only for software installations you want to keep permanently. Deep Freeze is a software