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Line 1,596:
Line 1,596: − + Line 1,604:
Line 1,604: − +
→SystemDeliveryInfo
| 0x0 || 0x4 || Must be <= to and match [[System_Settings|system-setting]] <code>contents_delivery!system_delivery_protocol_version<code>.
| 0x0 || 0x4 || Must be <= to and match [[System_Settings|system-setting]] <code>contents_delivery!system_delivery_protocol_version<code>.
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|-
| 0x4 || 0x8 || Unused by NS, besides HMAC validation.
| 0x4 || 0x8 || Unused by [[#RequestSendSystemUpdate]]/[[#RequestReceiveSystemUpdate]], besides HMAC validation.
|-
|-
| 0xC || 0x4 || SystemUpdate meta version.
| 0xC || 0x4 || SystemUpdate meta version.
| 0x18 || 0x1 || Copied into state by [[#RequestSendSystemUpdate]].
| 0x18 || 0x1 || Copied into state by [[#RequestSendSystemUpdate]].
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|-
| 0x19 || 0xC7 || Unused by NS, besides HMAC validation.
| 0x19 || 0xC7 || Unused by [[#RequestSendSystemUpdate]]/[[#RequestReceiveSystemUpdate]], besides HMAC validation.
|-
|-
| 0xE0 || 0x20 || HMAC-SHA256 over the previous 0xE0-bytes.
| 0xE0 || 0x20 || HMAC-SHA256 over the previous 0xE0-bytes.