According to the author of the article at PC Magzine called New Windows Utility Claims To Bypass UAC, this is not a good utility and it makes computers vulnerable.

When users try to install the software, it will require Administrator access. Therefore, users has to trust the program whether it’s a legitimate program or a virus/malware.

What the iReboot authors did to make this software work what it is suppose to do is that they rewrote the program into two halves. One is a Windows service and the other is a user mode interface.

Source: PC Magazine