Thursday, October 23, 2025
HomeMobileIOSDevelopers release untethered g1lbertCFW jailbreak for legacy iPhone 4S running iOS 5.1

Developers release untethered g1lbertCFW jailbreak for legacy iPhone 4S running iOS 5.1

There aren’t a whole lot of people using legacy iPhones anymore; but just in case you’re one of those niche enthusiasts who does for the sake of personal endeavors or for collecting and testing purposes, we’ve got some great news for you.

iPhone 4siPhone 4s

A group of developers including @selfisht, @LGD, @frog, and @PrimePlatypus (Discord names) have released a new untethered jailbreak tool called g1lbertCFW for the iPhone 4s running iOS 5.1.

Citing the project’s GitHub page, g1lbertCFW works by making a custom CFW that bakes the g1lbertJB beta into it. Currently, it’s only meant for the iPhone 4s, and specifically iOS 5.1, so it can’t be used on other phones or firmware versions.

No, this certainly won’t pertain to most iPhone users today, and probably not even for the majority of jailbreakers who still partake in the hubby today, but for anyone who still keeps older devices around for testing software on them or for ensuring compatibility of their tweaks with older versions devices and firmware versions, g1lbertCFW could be of use.

For what it’s worth, g1lbertCFW is considered a developer beta jailbreak and it does not preserve your baseband. Additionally, the jailbreak is only intended to be used on Mac computers at this time, so Windows users won’t be able to take advantage.

Even though very few people are likely to use g1lbertCFW in this day and age, the developers claim that the release is important as it’s the first iOS 5.1 jailbreak for the iPhone 4s. According to the project’s GitHub page, it’s also the first untethered jailbreak for all of iOS 5.

Another fun fact shared by the developers about this tool is that it’s the current record holder for the longest time taken to jailbreak a particular firmware at 4,127 days. Not that anyone was still sitting on an iPhone 4s running iOS 5.1 and waiting for a jailbreak…

Since g1lbertCFW is a developer-centric tool, ordinary jailbreakers are going to want to steer clear unless they know what they’re doing. That’s because there’s some nuance to using the jailbreak as it’s not a simple point-and-click jailbreak like a lot of the user-friendly tools available today.

If you’re interested in learning more about the g1lbertCFW project, then you can head over to the GitHub page to read about it and the creators.

What are your thoughts about the release of an iPhone 4s jailbreak for iOS 5.1 in 2023? Let us know in the comments section down below.

Dominic
Dominichttp://wardslaus.com
infosec,malicious & dos attacks generator, boot rom exploit philanthropist , wild hacker , game developer,
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