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Difference between revisions of "PROD"
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This is to prevent production devices from running non-production code. |
This is to prevent production devices from running non-production code. |
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[[Category:Firmware Tags]] |
[[Category:Firmware Tags]] |
Latest revision as of 19:35, 16 July 2015
The PROD (PRODuction) tag is a bit value that denotes if the image/ticket signature is for production devices or not. It is present in the SHSH certificate img3 and APTicket. When set to true
, the image is designated to be installed onto production and development devices. When the tag value is false
, the image/ticket is only explicitly accepted on internal devices. This is enforced through iBoot's do_load_image(void);
routine. The routine skips the PROD tag check if the device's fuse value is false
.
This is to prevent production devices from running non-production code.