This is the closest you will get to "modified firmware." Dopamine uses the Fugu15 kernel exploit (CVE-2023-23520) which works on iOS 15.0 – 15.4.1 for A12–A15, including iPhone 11.
The iPhone 11, released in 2019, has been a highly successful device for Apple, offering a range of innovative features and improvements over its predecessors. However, for many users, the closed ecosystem of iOS can be limiting, and the desire for customization and control over their device has led to a growing interest in modified iOS firmware. This paper explores the concept of modified iOS firmware on the iPhone 11, with a focus on patched approaches that allow for customization and enhancement of the device's functionality. We discuss the current state of iOS firmware modification, the challenges and risks associated with patching, and present a case study on a patched approach to modifying iOS firmware on the iPhone 11. modified ios firmware iphone 11 patched
: When a tool like unc0ver released a jailbreak for the iPhone 11 (A12+ devices) on iOS 13.5, Apple responded within days by releasing a "patch" (iOS 13.5.1) that specifically killed the exploit. Modern State of the iPhone 11 This is the closest you will get to "modified firmware
As of late April 2026, Apple has released critical firmware updates for the Go to product viewer dialog for this item. This paper explores the concept of modified iOS