On eBay or modding forums, you can find PS4s already on 5.05, 6.72, or 9.00. Prices range from $150 (original) to $350 (Pro). This is cheaper than buying a tool and risking your main console.
Warning: This will permanently brick your PS4 if done incorrectly. downgrade tool ps4
Prerequisites:
Process Overview:
Result: PS4 now reports lower firmware – but online services (PSN) will be blocked. Games requiring higher firmware won’t run. On eBay or modding forums, you can find PS4s already on 5
Some advanced mods allow you to run an older firmware from an external drive without touching the internal NOR. This is firmware-specific and rare, but check PS4 Linux Loader projects. Warning: This will permanently brick your PS4 if