Scene youtuber Modded Warfare has posted an impressive video tutorial where he details a full downgrade to his PS4 version. In the video, youtube goes from 6.72 to 10.01, then back down from 10.01 to 6.72.
Downgrade from PS4. Important Notes and Disclaimers (Seriously, Read This First!)
Now, to be very clear: This is nothing new or groundbreaking at this point, the main point is that you can only go back to the firmware you created a backup of (from your console). Furthermore, creating the initial backup is much easier if your console is Jailbroken, although it is possible to do this on a “normal” console as well.
In other words , If you’re on non-jailbreakable firmware (eg 10.01 at the time of this writing) and are hoping this will let you downgrade your console to a jailbreakable firmware, the answer is no, unless you’ve done the work Preparatory at a point where your console was breakable.
In my view, this means that the guide will most likely be useless to the vast majority of people who will find it, usually too late. However, it has tremendous value for multiple reasons. First of all, I’m not sure there is such a detailed (and well made!) guide on how to do this yet. Secondly, we still say in this blog that downgrading PS4 is “Technically possible, but…So it would now be possible to easily refer to MW’s video to explain why this is at best difficult, and in most cases impossible. As Modded Warfare states, it may also have some value for people who are “blocked” to an unjailbreakable firmware, but want to update to the latest and best so they can play online.These people can back up their current firmware (hopefully it’s jailbreakable eventually) and then update to the latest firmware.Last but not least,this can actually pave the way for fallback methods Downgrading to an older version is easier at some point, especially if some aspiring modder tries to work on modchip solutions that don’t involve any soldering.
With all of the above said, assuming you want to backup your PS4 so you can “easily” migrate to the latest firmware, and then back to a Jailbroken console later, here’s my honest advice:
Buy a second PS4 and don’t try to follow the downgrade guide.
Look, I’m not kidding, owning two PS4s is probably a safer idea than trying to downgrade, and unless you already have the necessary materials, it can actually be cheaper too. (Give or take, there are $200 worth of hardware out there that you need to own/buy in order to downgrade). This may change in the future if the process becomes easier, or if there are good reasons to go back and forth (removing blocks, for example), but Currently downgrading a PS4 is very difficult with significant risks of permanently bricking the console, which is more technically impressive than useful or low cost..
With all that being said, if you want to stick around to watch the technically cool video, or for personal knowledge, you might be the audience for it. At the very least, you might want to watch the video, if only to hear MW say “we’ll take a few dumps” or “take a good dump” with a straight face 🙂
Note that the process is easier if you start with a Jailbroken PS4, which is what MW’s video describes.
Here’s what you need to prepare and perform the downgrade. It is recommended to prepare all these tools (hardware or software) in advance.
- Your PS4, running on the firmware you’ll eventually want to revert to
- this is important. This is a “restore from backup” method of downgrading, and it will not allow you to downgrade firmware that you did not initially create a backup for. Using someone else’s backup won’t work either!
- Flashing devices like Teensy 4 (This is required to get SFlash0 from a non-jailbroken controller, and to flash it back during the downgrade process. Also required to dump syscon)
- Heat gun (to unscrew the syscon chip. This is needed to make a backup)
- soldering iron
- a pair of tweezers;
- TQFP board
- 4 k ohm resistor
- Some PCB wires
- Diode to switch
- USB to TTL converter
- Replacement syscon chip (which model you need to order depends on your motherboard,
- As I understand it, this is not required, but recommended, so you don’t have to constantly flash these chips
- Renesas E2 Lite programmer, or other flasher
- BwE NOR Validator, which will help you make sure your backup files are not corrupted (download here)
- FTP client like filezilla
- HDD Raw Copy (to back up the hard disk)
- Drivers for the USB to TTL converter (such as the CP2102 drivers mentioned above)
- MW package file that contains the software required for the troubleshooting process
What you’ll need to back up to prepare for a downgrade on PS4
The following data is what you’ll need to backup, and then restore, to downgrade your PS4:
- A full backup of the console hard drive
- PS4 SFlash0 (NOR Firmware)
- It’s very easy to get SFlash0 from a Jailbroken console, as it’s just a file you can copy from FTP
- PS4 will be silent
As a TL,DR, the idea is that you will backup the above 3 pieces of data, then you should be able to move to a higher firmware, and then back. The Modded Warfare video, of course, contains all the details.
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