If you need to install 3.73 specifically (for example, to recover from a soft-brick or to follow a specific legacy guide), you can do so manually.
Your demand for the download to "better work" highlights a specific frustration common among the PS Vita homebrew community. ps vita firmware 373 download better work
Sony’s final firmware, (2021), offers no performance improvements—only more anti-hacking measures. If you’re on 3.73 and want it to "work better," do not update to 3.74 . Stay on 3.73, hack it, downgrade to 3.60, and install Enso. 3.74 blocks h-encore² and requires a more complex downgrade path. If you need to install 3
For those already on 3.73, you can still hack it—but the process requires more steps (using h-encore²) and isn’t permanent. downgrade to 3.60