A: No. There is no known method to perform a true downgrade from a high, un-exploitable firmware directly to a lower one. Only a "Firmware Revert" to a previously installed version is possible, and it requires prior backups and soldering.
: Be cautious of websites or videos claiming a "software-only" downgrade via USB or DNS. These are universally scams or clickbait. Firmware Revert - ConsoleMods Wiki
: A community-developed, command-line tool suite specifically built for parsing, validating, and patching PS4 NOR and Syscon dumps. ps4 downgrade 1302 to 900 top
Struggling with error codes 1302 and 900 on your PS4? This long-read article explains what these codes mean, why a “downgrade” is virtually impossible on stock hardware, and the safest ways to fix update loops without bricking your console.
: Disassemble the PS4 until the bare motherboard is exposed. : Be cautious of websites or videos claiming
: Specialized scripts to read and manipulate the Syscon's internal memory states. The Step-by-Step Reversion Process
: Use a hardware flasher to extract the current data from the Syscon and NOR chips. Struggling with error codes 1302 and 900 on your PS4
This is the software magic. You take your high-firmware NOR dump and use a PC tool (such as or a Hex Editor) to change specific values.
[Slot A: Current Firmware] <-- You are here [Slot B: Previous Firmware] <-- Can be toggled back via Syscon manipulation Required Hardware & Equipment
The phrase "1302 to 900 top" is about target firmware versions, not errors. However, if searching for downgrade methods, you might encounter references like "PS4 900 Karo," which is simply a mispronunciation or slang for firmware 9.00.