Downloading Apple iMac Hard Drive Firmware Update 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software lies within System Tools, more precisely General. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Apple iMac Hard Drive Firmware Update fixes a hard drive issue that may prevent some iMac (21.5-inch and 27-inch, Mid 2010) systems from booting properly.
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