It sounds like you're asking for a review of — likely a service, tool, or seller claiming to downgrade PS4 firmware (e.g., from 9.00+ back to 6.72 or 5.05 for jailbreaking).

Please contact @johnrushx

Include this into your message:
- gpt url
- the boost type you wanna do and its price
- when you want it

https://twitter.com/johnrushx  sistrodowngradeps4

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Approximately, we add new tools within three months.

We will publish it with a no-follow link.    

However, you can publish your tool immediately and get a forever do-follow link.    

Get it now for $49. 

Sistrodowngradeps4 Page

It sounds like you're asking for a review of — likely a service, tool, or seller claiming to downgrade PS4 firmware (e.g., from 9.00+ back to 6.72 or 5.05 for jailbreaking).