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As of 2025, no publicly released, untethered jailbreak exists for iOS 15.7.3 on any device, including the iPhone 7. However, the iPhone 7 is uniquely positioned because it is equipped with the Apple A10 Fusion chip, which contains a hardware-level vulnerability known as checkm8 . This bootrom exploit, discovered in 2019, is unpatchable by Apple via software updates because it resides in read-only memory. Crucially, checkm8 allows for a semi-tethered or tethered jailbreak on all devices using the A5 through A11 chips, including the iPhone 7.
It is vital to distinguish this from a fully untethered jailbreak. With palera1n, the device does not automatically return to a jailbroken state after a power cycle. Additionally, because the checkm8 exploit requires a physical USB connection to a computer at boot time, the process is less convenient than classic untethered solutions but remains reliable for technical users. iphone 7 ios 15.7.3 jailbreak
The Feasibility and Implications of Jailbreaking an iPhone 7 on iOS 15.7.3 As of 2025, no publicly released, untethered jailbreak
The iPhone 7, released in 2016, remains a capable device for many users, particularly those who value legacy hardware and software stability. Its latest officially supported operating system, iOS 15.8.3, represents the end of the line for this model. Among the various iOS 15 sub-versions, iOS 15.7.3 holds a specific niche interest for the jailbreaking community. Jailbreaking—the process of removing software restrictions imposed by Apple’s iOS—has historically allowed users to customize their devices, install unauthorized apps, and access system-level features. This essay examines the technical landscape, current tools, risks, and ethical considerations surrounding the jailbreak of an iPhone 7 running iOS 15.7.3 as of the present day. Crucially, checkm8 allows for a semi-tethered or tethered
For iOS 15.7.3 specifically, the primary jailbreak tool leveraging checkm8 is . This tool supports iOS 15.0 through 15.8.3 on checkm8-vulnerable devices. Therefore, an iPhone 7 on iOS 15.7.3 is fully jailbreakable using palera1n. The resulting jailbreak is semi-tethered : after each reboot, the device will boot into a standard, non-jailbroken state, requiring re-execution of the palera1n tool from a computer to re-enable the jailbreak environment.
Another practical risk is boot-looping. Improper use of system tweaks or removal of critical daemons can render the device unable to boot into iOS. While palera1n includes a --force-revert option to remove the jailbreak and restore bootability, data loss may occur if backups are unavailable.

We deliver value to small, medium and large sized businesses across all industries through modern and innovative technology solutions.
Contact
01-912-5048
3/5 Boyle Street, Onikan, Lagos
Monday – Friday: 8am-5pm
Useful Links
Type news info here…
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