On the basis of the above information we can see that since the underlying hardware runs an older BridgeOS version you were unable to launch the desired MacOS instance successfully using versions 13.2.1 and 12.6.3 which continues to fail 'instance' status check. *Note: Typically the scrubbing workflow take care of the bridgeOS upgradation to the latest version. Unfortunately, this was paused as latest BridgeOS version upgrade workflow is failing. Rest assured we do have our internal service teams working on this. However, we do not have an exact ETA for the fix, as of now. On behalf of AWS I apologize for any inconvenience caused due to this. Please find below description of scrubbing workflow on stop-start: "When you stop or terminate a Mac instance, Amazon EC2 performs a scrubbing workflow on the underlying Dedicated Host to erase the internal SSD, to clear the persistent NVRAM variables, and if needed, to update the bridgeOS software on the underlying Mac mini. This ensures that Mac instances provide the same security and data privacy as other EC2 Nitro instances. It also enables you to run the latest macOS AMIs without manually updating the bridgeOS software".
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