The reported requirement comes from PlayStation backend data
PlayStation Game Size, an account that monitors store information, says the firmware field for GTA 6 changed from 14.10 to 14.22. Push Square reported the finding after Sony released the same system-software version.

The change would be consistent with Sony requiring recent firmware for a major release. It does not prove why the requirement changed, and it does not establish that Rockstar requested the update specifically to answer one exploit.
Sony describes 14.22 only as a security update
Sony’s public release information says version 14.22 contains security fixes. Neither Sony nor Rockstar currently lists a numbered minimum firmware requirement on the public GTA 6 support pages.
For that reason, 14.22 should be treated as a credible backend report rather than a confirmed launch specification. The requirement could also change again before release if the store build receives another update.
A claimed 14.22 jailbreak has not been demonstrated publicly
Posts circulating in modding communities claim that a working release for firmware 14.22 is close. No public package, repeatable demonstration or confirmation from established PlayStation security researchers currently supports that promise.
A limited exploit is also not the same as running commercial PS5 games. Console security uses several layers, and access to one part of the system does not automatically provide a method for copying, modifying or launching a protected title.
Players should use only official system software
Anyone planning to play GTA 6 at launch should install updates through the PS5 settings and avoid files shared through unofficial links. Fake firmware tools are a common way to distribute malware or steal account details.
The practical conclusion is simple: 14.22 may be required, but the final check will come from the console and the official support pages. The jailbreak claim remains an unconfirmed community rumour, not a release announcement.
