Because the iPhone XR lacks a BootROM exploit, loading a custom ramdisk requires complex, version-specific software vulnerabilities (usually found in the iOS kernel or the iBoot stage) or specialized hardware programming tools. Why Use an iPhone XR Ramdisk?
Most popular "free" Ramdisk methods you see online—like those using Broque Ramdisk Pro —rely on the exploit. This exploit is hardware-based and only works on devices with A7 through A11 chips (iPhone 5s through iPhone X). iphone xr ramdisk
For the iPhone XR, (created by the checkra1n team for A12+) is the most widely respected free option, though it requires manual compilation and a deep understanding of img4 image formats. Because the iPhone XR lacks a BootROM exploit,
: Frequently updated to support newer chipsets and often includes Ramdisk features for newer iPhones, though it typically requires a paid license. This exploit is hardware-based and only works on
: The famous checkm8 hardware exploit works only on A7 through A11 Bionic chips (iPhone 5s through iPhone X). Because it is a bootrom exploit, those older devices can be put into Pwned DFU mode permanently, regardless of the iOS version.
If you are looking for information on managing the XR's actual 3GB of system RAM for performance, or its storage memory: