Firmware 9.00 is highly desirable in the hacking community because it was the last major firmware that had a reliable, user-friendly exploit (the pOOBs4 kernel exploit).
The "story" of a PS4 downgrade from firmware to 9.00 is a journey from a modern, restricted system back to a "golden age" for homebrew enthusiasts. The Problem: Being "Too Updated" ps4 downgrade 1302 to 900 top
Key concepts (short and punchy)
Downgrading a PlayStation 4 (PS4) Go to product viewer dialog for this item. Firmware 9
Do not attempt “1302 to 900” downgrade based on internet rumors. If you are on a firmware above 9.00, enjoy online gaming or wait for a future exploit. If you really need 9.00 for jailbreak, buy a console confirmed ≤9.00. Hardware downgrade is only for experts with proper tools, and success is not guaranteed. Do not attempt “1302 to 900” downgrade based