The developer demonstrates a working method for implementing tweaks for the Fugu15 jailbreak

Linus Henze’s Fugu15 jailbreak for arm64e devices running iOS and iPadOS 15.0-15.4.1 was first announced and demonstrated last October, but it was primarily aimed at developers as there were no additional settings to make it user-friendly.

But iOS developer @evelyneee seems to have a solution in the form of a working preference injection method they call ElleKit, which appears to be a fully open source and Swift-based preference injection method comparable to Substitute and libhooker.

In a tweet posted on Sunday, @evelyneee said that the tweak injection works well on Linus Henze’s jailbreak platform, which references Fugu15, and can also be applied to Fugu15’s recently released ra1ncloud-based jailbreak, which offers a more user-friendly interface.

In some additional questions about the tweet, @evelyneee said that while jailbreak settings and repositories should be updated for non-rooted dynamics, ElleKit is already mostly working. This seems to suggest that ElleKit could be deployed as a customization injection method on Fugu15 and maybe even ra1ncloud if needed.

ElleKit is not yet system-wide supported and does not yet support C function interception, but these are minor bugs that may eventually be fixed as the project progresses.

One important caveat worth mentioning is that a Wi-Fi related issue known to cause panic in certain versions of iOS or iPadOS 15 when jailbroken with Fugu15, namely version 15.3.1, still remains.

Despite the aforementioned caveat, the tweak injection method that works is a major step in the right direction as people who have been sitting on the lowest firmware possible continue to wait for a publicly available jailbreak solution.

Fugu15 and the ra1ncloud jailbreak Fugu15 support iOS and iPadOS 15.0-15.4.1 devices, i.e. iPhone XS and newer.

While the developer-focused XinaA15 jailbreak also works on iPhone XS and newer, in comparison, it only supports iOS and iPadOS 15.0-15.1.1. Those using an iPhone X or earlier on any version of iOS or iPadOS 15 can use the palera1n jailbreak tool based on the checkm8 bootrom exploit instead.

Are you excited about the implications of the working method of implementing tweaks for the Fugu15 jailbreak and possibly other jailbreaks based on it? Be sure to let us know in the comments section below.