At least 2GB capacity (all data on it will be erased).
Checkra1n is based on the hardware exploit, which works on devices with A7 through A11 chips. For iOS 12.5.5, this specifically includes: iPhone: 5s, 6, 6 Plus iPad: Air (1st Gen), Mini 2, Mini 3 iPod Touch: 6th Generation 2. Essential Prerequisites Before beginning, ensure you have the following ready: download checkra1n for windows ios 12.5.5
Use a standard USB-A to Lightning cable. USB-C to Lightning cables often fail to enter DFU mode. At least 2GB capacity (all data on it will be erased)