Inferno (utility)

This article discusses software internally used by Apple. Acquiring a copy without Apple's consent is illegal and may result in being scammed. Engaging in illegal activity is not condoned. This information is provided for educational purposes only.

Inferno running on a prototype iPhone 4 (iPhone3,1) 8A2062a

Inferno 12A93311h running on an iPhone 6 prototype

Inferno is a diagnostic utility used in Apple internal firmwares. Its functionality is similiar, if not the same, to the BurnIn utility. It runs a set of hardware and software checks predefined by PList files. It can shut itself down if device reaches critical temperature level. It can also be accessed in any firmware by passing the boot argument "inferno" to the device. Because development iBoots pass boot arguments to the kernel (unlike production variants), this can be done on any prototype device. The following are pictures and documentation of prototype devices running known Inferno builds.

Known versions

• Inferno 7C144
• Inferno 7C1023e
• Inferno 8A2062a
• Inferno 10A23110z
• Inferno 11B64940j
• Inferno 12A93311h

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