![]() ![]() You’ll need to back date the systems clock date back to 2013/14 so the certificate check passes. You may need to look for them on Amazon/eBay just be careful! Make sure you don’t get a cloned copy as they could have messed with it. Its successor, OS X Mavericks, was a free upgrade for all compatible machines just as subsequent releases have been. I’m not even sure if Apple still offers them. Mountain Lion was the last Mac update that users had to pay to download. If you must stick with Lion or Mountain Lion you’ll need to get the Installer CD from Apple If you allow Internet recovery go to the newest OS your system supports you’ll likely get into a big mess! The firmware update it applies needs to be at Sierra to properly upgrade and Apple will also force you to a new file system (from HFS+ to APFS) which has issues on older SATA based systems like yours. Then setup a bootable USB thumb drive OS installer following this guide How to create a bootable macOS Sierra installer drive ![]() ![]() You’ll need to down load it from here How to upgrade to macOS Sierra Jump down to Step 4 for the URL link. The best thing here is to upgrade to Sierra as being the best macOS for your system. Yep - You have a problem! Apple has not maintained the older versions of OS-X/MacOS like Lion within Internet Recovery service. ![]()
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