Some believe swapping the HDD allows downgrading because the firmware is on the drive. The firmware bootloader resides in NOR flash on the motherboard. A blank HDD will force a reinstall of the latest allowed firmware via internet or USB. No downgrade.
One mistake and your PS4 becomes a plastic brick. ps4 downgrade 1302 upd
Interpreting "1302 UPD"
Downgrading a PS4 from firmware is technically possible but is a complex hardware-level procedure known as a firmware revert . It is not a simple software update and cannot be done through a standard USB stick or safe mode menu alone. The Core Concept: Slot A vs. Slot B Some believe swapping the HDD allows downgrading because