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The Erista BCT's data is only signed after offset 0x0510. Therefore, regions like [[#CustomerData|CustomerData]] can be freely modified without resigning. This is done by [[NS_Services|NS]] when injecting a new [[Flash_Filesystem#Keyblob|keyblob]] during a system update, for example.
The Erista BCT's data is only signed after offset 0x0510. Therefore, regions like [[#CustomerData|CustomerData]] can be freely modified without resigning. This is done by [[NS_Services|NS]] when injecting a new [[Flash_Filesystem#Keyblob|keyblob]] during a system update, for example.
The Mariko BCT's data is signed and encrypted after offset 0x0480, so the [[Flash_Filesystem#Keyblob|keyblob]] system is no longer used.
The Mariko BCT's data is signed starting at offset 0x420 and encrypted starting at offset 0x480, so the [[Flash_Filesystem#Keyblob|keyblob]] system is no longer used.
During boot, the boot ROM parses the appropriate BCT from eMMC storage and stores a copy of it in IRAM at address 0x40000000.
During boot, the boot ROM parses the appropriate BCT from eMMC storage and stores a copy of it in IRAM at address 0x40000000.