"Flight mode," he muttered, toggling the setting. The internet icon in the top right corner vanished. The console was now an island.
The PS4 motherboard features a dedicated chip called the Syscon (System Control). The Syscon acts as the security gatekeeper for the console's firmware. Every time you update your PS4, the Syscon writes the new firmware version number to its internal, non-volatile memory. The Check Mechanism ps4 downgrade 13.02 to 9.00
You cannot simply put an older firmware on a USB drive and expect the PS4 to install it. "Flight mode," he muttered, toggling the setting
PS4 Downgrade 13.02 to 9.00: Is It Possible and How Does It Work? " he muttered