#Macbook pro mac os x lion 10.7.5 install
#Macbook pro mac os x lion 10.7.5 update

Install Lion and make several rounds of updates.ДЄfter you complete the process, be sure to set your Mac to the current date and time.Click on the year and use the down arrow to the right of it to change the year to 2012.If your Mac is set to Set date and time automatically, which is usually the case, disable it.Using trial and error, I found that setting a date in 2012 will let the installer function.

The installerвЂ™s certificate has expired, so you need to set your Mac to think itвЂ™s operating in the past. You canвЂ™t just install Lion on any old Mac that support it. See Apple and the вЂgoto failвЂ™ Bug for information on securing Lion. Lion is the oldest version of OS X impacted by the вЂњgoto failвЂќ bug. Lion is no longer available for purchase through normal App Store channels, although you may be able to acquire access to it through Apple Support. Lion was replaced by OS X 10.8 Mountain LionВ on July 25, 2012, just a year after Lion first became available. It was the first version of Mac OS X to be part of the annual upgrade program вЂ“ ever since Lion, Apple has released a new macOS version every year. The last version of Lion, OS X 10.7.5, was released on October 4, 2012. Apple introduced Rosetta, which lets Intel CPUs run PowerPC apps, with OS X 10.4 TigerВ for the first Intel Macs in 2006, and it had been part of OS X until now.

#Macbook pro mac os x lion 10.7.5 update

It requires Core 2 Duo or newer, which leaves the following Macs behind unless you update the firmware and install a Core 2 Duo CPU:ДЄdditionally, Lion is the first version of OS X with no support for PowerPC software. First of all, Lion is a 64-bit operating system, so it wonвЂ™t work on those 2006 Macs built around 32-bit Core Solo and Core Duo processors. Like OS X 10.6 Snow Leopard, Lion requires an Intel-based Mac, but it goes two steps beyond that. As a convenience, Apple allowed users to bring their Macs to a nearby Apple Store and use AppleвЂ™s WiFi to make the download. You must have OS X 10.6 Snow LeopardВ installed to purchase, download, or install Lion, and the 4 GB download could take some time with slower DSL connections (we donвЂ™t even want to think about how long it would take with dial-up).

Lion was only available by purchase and download from the Mac App Store, where it retailed for US$29.99. Some of these changes were to make it easier for iPhone, iPad, and iPod touch users to adapt to the Mac, some to make the two platforms work better together, and some to keep making the Mac better and better. OS X 10.7 Lion was released on Jand made some huge changes to the Mac.