Sony released yesterday a brand new firmware for the PlayStation 4, firmware 4.55, is intended to improve system stability, we know the song, the purpose of these intermediate versions is to correct flaws without actually bringing new features.
On the other hand the developer Qwertyoruiop spoke from the outset claiming that this firmware 4.55 is more interesting than the 4.50. According to him Sony has "merged the code with more potential problems than the previous one, it has some jsc features that make the feat easier to set up."
It should be remembered that in a tweet a few weeks ago he mentioned that he was in possession of some recent Webkit exploits that did not work on PS4 because the PS4 version of the Webkit was too old. It seems to me that his statement today relates directly to this old tweet.
In short, you'll understand, under cover of wanting to fix new flaws and merge jsc code, Sony may have made one or two compilation errors that could be used, to follow.
On the other hand the developer Qwertyoruiop spoke from the outset claiming that this firmware 4.55 is more interesting than the 4.50. According to him Sony has "merged the code with more potential problems than the previous one, it has some jsc features that make the feat easier to set up."

It should be remembered that in a tweet a few weeks ago he mentioned that he was in possession of some recent Webkit exploits that did not work on PS4 because the PS4 version of the Webkit was too old. It seems to me that his statement today relates directly to this old tweet.

In short, you'll understand, under cover of wanting to fix new flaws and merge jsc code, Sony may have made one or two compilation errors that could be used, to follow.