Apple has released its update for the SuperDrive iMac Firmware.

The software is available through the Software Update utility. This update repairs a previously reported incompatibility with 4x DVD-R and 2x DVD-RW media used in iMac SuperDrives.

In September, Pioneer warned that some of its DVD recorders could overheat when using the new high-speed DVD-R and 2x DVD-RW media. The company warned this could damage the DVD recorder units, and potentially harm the host machine. Pioneer also said Apple would release an update to fix the problem.

Apple's update also fixes a problem found ejecting copy-protected audio CDs.