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@@ -8,7 +8,7 @@ Apple Silicon devices seem to follow a boot flow very similar to modern iOS devi
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# Stage 0 (SecureROM)
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This stage is located in the boot [ROM](../project/glossary.md#r). Among others, it verifies, loads and executes normal stage 1 from [NOR](../project/glossary.md#n). If this fails, it falls back to [DFU](../project/glossary.md#d) and wait for an [iBSS](../project/glossary.md#i) loader to be sent, before continuing with the [DFU](../project/glossary.md#d) flow at stage 1.
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This stage is located in the boot [ROM](../project/glossary.md#r). Among others, it verifies, loads and executes normal stage 1 from [NOR](../project/glossary.md#n). If this fails, it falls back to [DFU](../project/glossary.md#d) and waits for an [iBSS](../project/glossary.md#i) loader to be sent, before continuing with the [DFU](../project/glossary.md#d) flow at stage 1.
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# Normal flow
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* Get the local policy hash:
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- First try the local proposed hash ([SEP](../project/glossary.md#s) command 11);
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- If that is not available, get the local blessed hash ([SEP](../project/glossary.md#s) command 14)
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* Read the local boot policy, located on the iSCPreboot partition at `/<volume-group-uuid>/LocalPolicy/<policy-hash>.img4`. This boot policy has the following specific metadata keys:
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* Read the local boot policy, located on the iSCPreboot partition at `/<volume-group-uuid>/LocalPolicy/<policy-hash>.img4`. This boot policy has the following specific metadata keys ([4CCs](../project/glossary.md#4)):
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