CFI v1.2 also known as Custom Flash installer has been updated and release to the PSP homebrew community . CFI v1.2 was develop and release by psp homebrew developer Camaro8000 who decided to release a updated version of his Custom Flash Installer PSP Homebrew . If you are using a old version of this pretty good flash player for the PSP m, Then feel free to updated to the latest version of CFI which is now on version 1.2 . CFI v1.2 is a PSP Homebrew application that will help you launch certain flash files such as videos, games, and player.

This is what the developer had to say about CFI v1.2

After many complaints about Semibricks have my beta key and I can attribute the error to the firmware, and have strengthened the security notices, and blocked for all firmwares at 5:50 the installation of Waves and Fontfarben.

Thus, this version is intended more for the D3-Gen 5:50.
If a version will follow for the 5.00M33 depend on the Demand off.