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+# BMC-side state machine details
+
+***ONLY ONE BLOB IS ALLOWED OPEN AT A TIME***
+
+To avoid excessive complications, there is a restriction that only one blob
+within the firmware handler can be open at a time.
+
+The system starts in the `notYetStarted` state.
+
+At each state, each method has a specific effect, depending on a variety of
+details, and sometimes the behavior is consistent regardless of overall state.
+
+## `notYetStarted`
+
+**The starting state.**
+
+## `uploadInProgress`
+
+**The BMC is expecting to receive bytes.**
+
+## `verificationPending`
+
+**The BMC is ready for verification or more bytes.**
+
+## `verificationStarted`
+
+**The verification process has started, no more writes allowed.**
+
+## `verificationCompleted`
+
+**The verification process has completed.**
+
+## `updatePending`
+
+**The update process is pending.**
+
+## `updateStarted`
+
+**The update process has started.**
+
+## `updatedCompleted`
+
+**The update has completed (optional state to reach)**