Iphone Xr: Ramdisk

Recently, the development of Secure Enclave RAMDISK (SERA) and the Blackbird exploit have changed the game for A12 devices. Researchers found ways to demote the SEP or use race conditions to load a modified ramdisk on the iPhone XR. While not as trivial as older devices, tools like SSHRD (SSH Ramdisk) have been ported to support iPhone XR on specific iOS versions (typically iOS 13 to iOS 15.4.1).

Uploading the wrong ramdisk image or corrupting the NOR (non-volatile memory) can put your iPhone XR into an unrecoverable state—requiring a full restore (erasing all data) or, in worst cases, a hardware repair.

As of 2025, the iPhone XR is rapidly aging. iOS 18 may drop support entirely. For ramdisk enthusiasts, the window is closing. Apple’s Hardened Runtime and Lockdown Mode make ramdisk injection nearly impossible on newer iOS versions. iphone xr ramdisk

However, the A12 vulnerability known as "CVE-2024-27818" (a kernel cache issue) recently gave hope to developers. We may see one final "swan song" ramdisk tool for the iPhone XR on iOS 17.

If you have an iPhone XR that you want to keep "ramdisk-accessible," stay on iOS 15 or 16. Never update over the air. Recently, the development of Secure Enclave RAMDISK (SERA)

Warning: This section is for educational and research purposes only. Improper use can permanently brick your device or void its warranty.

Creating a functional ramdisk for the iPhone XR involves several high-level steps. Unlike the iPhone 7 or 8, you cannot simply use ipwnder or checkra1n due to the lack of a BootROM exploit. Instead, modern methods rely on PongoOS (a bootloader replacement) or Blackbird exploits (for iOS 13–15). If you have proof of purchase for an

Creating a working ramdisk for the iPhone XR is exponentially harder than for an iPhone 7 or 8.

Send components using img4tool + gaster:

gaster reset
gaster pwn
img4tool -e -p ramdisk.img4 -o ramdisk.dec
gaster ramdisk ramdisk.dec
gaster dtcp devicetree.img4
gaster go

If you have proof of purchase for an iPhone XR, Apple will remove an Activation Lock. However, some third-party repair shops use ramdisk tools (like "iRemove" or "Checkra1n-based variants for A12") to bypass the lock on devices where the previous owner cannot be reached—though this remains a legal gray area.