Backporting : Modifying a game made for a newer firmware to run on an older firmware that's not officially supported.
As of 2024, the scene for 9.00 backports is highly mature. Since firmware 9.00 remains the "gold standard" for stability due to the
Even with a "PS4 Backport 900 Verified" label, some games may still have issues if they rely on specific SDK functions from a newer firmware. Always check the release notes. However, for the vast majority of titles, "900 Verified" means on a jailbroken PS4 running FW 9.00.
PS4 Backport 900 Verified: Playing New Games on Older Firmware
In the PlayStation 4 homebrew scene, backporting is the technical process of modifying a game or update designed for a newer system firmware so it can run on an older, "jailbroken" firmware like version