: Back up your save data before proceeding.
Be extremely cautious: There is no legitimate "one-click" software that can downgrade a PS4's system firmware
How to Revert the PS4 to a Previous Firmware (Full Tutorial)
can be used to download version 1.00 of games by blocking all patches, then Mode 1 can be used to upgrade to specific patch versions like 1.01.
If your goal is to run homebrew applications or backups, you do not necessarily need to downgrade. Instead, you should check your current firmware version against known, safe jailbreaks. Check Your Firmware
Finally, the correct recovery firmware is reinstalled via a FAT32-formatted USB flash drive. Important Considerations Before Modifying Your Console
Disable automatic updates immediately to prevent accidentally upgrading to a higher, unhackable version. 4. Final Verdict: Avoid the Scams
This is one of the most stable jailbreaks available. It requires a specially formatted USB drive and a web browser exploit to trigger the goldHEN payload. 2. Firmware 11.00 (PPPwn Exploit)
Let me know, and I can help you understand the hardware tools required or guide you toward safer, standard console modifications!
If your console is currently on firmware 11.00, and you just updated from 9.00, a hardware technician can patch your Syscon to revert back to 9.00.
If you are considering attempting a hardware-level firmware reversion to unlock your console for homebrew or jailbreak purposes, you must weigh the risks and requirements:
: Even with expert-level hardware modification, you can typically only revert to the exact previous version