not possible to downgrade a from firmware 13.02 to 9.00 through a simple software update or factory reset
This is the secret sauce. You are not deleting the 1302 error; you are lowering the minimum version requirement flag. ps4 downgrade 1302 to 900
PS4 CONSOLE ON 13.02 FIRMWARE- LET'S REVERT IT TO 12.02! - YouTube. This content isn't available. FixmyConsole not possible to downgrade a from firmware 13
You need to access the (located near the southbridge) or the BD controller on the motherboard. : The PS4 stores two copies of firmware
: The PS4 stores two copies of firmware in its chips (the active and previous versions). A technician can use specialized hardware and to flip the system back to the previous firmware slot. Limitation
Be extremely cautious of websites or YouTube videos claiming you can downgrade 11.02 to 9.00 by just downloading a "special file" or using a DNS setting.