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It’s only been a couple days since Apple released the Early 2011 iMac, yet there are already updates that address a number of compatibility issues. More interesting still is a firmware update that enables full 6Gbps SATA performance. Come inside for the full monty.

Other World Computing reports that there’s more to Apple’s iMac EFI Update 1.6 (6.1MB) than just “fixes that improve performance and stability for Thunderbolt.”

Specifically, the Mac peripheral and add-on reseller discovered that iMac EFI Update 1.6 also unlocks the full 6Gbp throughput potential of SATA 3.0 capabilities in two of the the Early 2011 iMac’s drive bays. Unfortunately, the optical bay remains at 3Gbps.

A little of this, a little of that

Apple’s also delivered the Mac OS X 10.6.7 for Early 2011 iMac (382.56MB), which addresses a number of reliability, compatibility and device support issues:

— Improve the reliability of Back to My Mac
— Resolve an issue when transferring files to certain SMB servers
— Address various minor Mac App Store bugs
— Address minor FaceTime performance issues
— Address issues with graphics stability and 3D performance
— Improve external display compatibility
— Improve Thunderbolt device support

Apple announced and shipped the Early 2011 iMac on Tuesday of this week.