The "2.10.iso" file is a specific version of a prebuilt ISO that has gained popularity among developers, system administrators, and users. This ISO file contains a pre-configured operating system, along with a set of tools and software, that can be easily installed and used. The "2.10" designation refers to the version number of the ISO, indicating that it is the 10th revision of the 2nd major release.
If you encounter a black screen, try removing all memory cards and controllers before booting, or wait up to 3 minutes for the payload to load.
CTurt/FreeDVDBoot: PlayStation 2 DVD Player Exploit - GitHub