The author writes that... "This application will change your drive¹s firmware to the region free AX21 version, or, if your drive is already using the AX21 version, it will prompt you to revert it to the region locked AA21 version. As the region locked version is an Apple official version, you may want to revert your drive to this version before sending the drive for repair, in case you ever need. The AX21 firmware was built by patching the AA21 firmware (which is region locked). The only modification is that it is RPC-1 (region-free). Once updated with a region free firmware, you will need the ³Region² utility to manage (unlimited) region change." My drive is an AA11 Will the patch work on my machine? Ray