A USB flash drive (minimum 4GB capacity). This process will completely erase the drive. The ra1nusb-intelnewrw4g.dmg file.

The filename ra1nusb-intelnewrw4g.dmg is not a random string; each part provides a clue:

instead of 3.0, as some older checkra1n versions have stability issues with 3.0 controllers in this emulated environment. for your specific processor generation?

: Temporarily turn off Find My iPhone and remove the lock screen passcode/Touch ID/Face ID on the target iOS device to avoid exploit interruptions. Step-by-Step Installation Guide