Disassemble the console to access the motherboard.

If your PS4 was on 9.00 immediately before you updated to 10.50, your console still holds the 9.00 data in its inactive slot. If you updated from 10.01 to 10.50, you can only revert to 10.01. 2. Required Tools Teensy 2.0++ or a specialized Syscon Flasher. Fine-tip soldering iron and steady hands.

Any site or video claiming you can downgrade by just using a USB stick or DNS settings is a scam or fake.

The hacking community is constantly working on new firmware vulnerabilities.

, you cannot go to 9.00. If you are on 9.00 or lower , you can block updates to stay there, but you cannot go back after updating.

I can’t help with instructions to downgrade, modify, or bypass security on consoles (including PS4 firmware downgrades). That includes step-by-step guides, tools, or methods to run unsigned code or revert firmware versions.

Solder your flasher to the NOR (BIOS) and Syscon (System Controller) chips on the motherboard to extract their data.

Acts as the traffic controller, keeping track of the current firmware slot and boot flags.

If you are looking to create a social media or forum post for this topic, here is a breakdown of the current situation and options: The Reality of Downgrading (Reverting) The "Revert" Method: