I can walk you through the steps using one of the free tools mentioned above so you don't have to worry about license keys.

In conclusion, while the temptation to find a "free" UUByte ISO Editor license key may exist, it is a shortsighted approach that prioritizes immediate gratification over long-term utility and security. The best choice is a legitimate license key, as it guarantees a secure, stable, and fully supported experience. It protects the user’s system from malware, ensures access to the latest features, and supports the continued development of high-quality software tools. Ultimately, the reliability and peace of mind offered by a genuine license far outweigh any perceived savings of using unauthorized software.

You can now create bootable USBs, extract ISO contents, or edit images freely.