This usually involves exploiting a vulnerability in the PS4's software. As of my last update, there are several methods (using a game or webkit exploit), but these can change rapidly as Sony patches vulnerabilities.
By physically extracting the data from the Flash memory and the Syscon chip, altering the boot registers, and flashing the modified code back, developers can force the motherboard to boot from the alternate slot containing the older firmware. 🧰 Required Hardware and Software Tools ps4 downgrade 13.02 to 9.00
: Downgrading will remove all data on your PS4. Ensure you've backed up any important data. This usually involves exploiting a vulnerability in the