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Hi, I have an early 2015 Macbook Pro (13") that runs OS X El Capitan 10.11.6. I'm trying to upgrade the OS as some programmes and antivirus protection software require a newer version. Can I upgrade to a version that will assist with this issue?
If not, does that mean that I need to get a new computer?
MacBook Pro 13″, OS X 10.11
Macs do not need any anti-virus apps, there are no viruses that attack the mac. Get full uninstall instructions from
the developer of the anti-virus programme you are using. All an AV app will do is run in the background using up
system resources for no benefit. Often they can flag up files as potential risks perhaps persuading you to delete them,
often these files are needed system files and if removed could cause your mac to malfunction.
The same can be said for apps that claim to clean optimise or speed up your mac, they are more likely to interfere
with the macs own management of itself.
Read this,
Effective defenses against malware and ot… - Apple Community
A 2015 MacBook Pro can upgrade to all macOS's available, which one is up to you.
As your mac can upgrade to the newer OS's like macOS Mojave 10.14, macOS Catalina 10.15,
and macOs Big Sur 11.5 I would recommend you upgrade to macOS High Sierra 10.13 first.
For High Sierra, Mojave or Catalina,
Open Safari and click on this link,
How to get old versions of macOS – Apple Support
Go to the Download OS section and click on the OS you want to install.
Before upgrading make a full back up of your Mac.
Check that third party apps you use have updates available for the new OS.
Check that your printers/ scanners etc have updated drivers and software available for the new OS.
Connect your mac to your router via cable rather than rely on WiFi.
Do not use your mac while it is downloading
and do not use any other devices that share the same internet connection.
If the App Store says ‘Open’ then it is detecting a previous download of the install app
go to the Applications folder locate Install macOS ******.app.
Move it to the Trash, empty the Trash.
Restart, click on the link again, the App Store should say ‘Get' or 'Download'.
If you want to install Big Sur, open Safari and click on the link below.
How to upgrade to macOS Big Sur - Apple Support
If you are considering upgrading to Catalina or Big Sur be warned they do not support 32bit apps.
Your Mac is probably running 32bit apps and these will need to be updated to 64bit apps,
some updates may be free, some may be paid. Use this app to discover which apps you have
are 32bit, https://www.stclairsoft.com/Go64/ then contact the developers of the software to see
if they are offering 64bit updates.
Back up your data, check your applications for compatibility, and click on High Sierra, Mojave, Catalina, or Big Sur.
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Upgrade OS X El Capitan 10.11.6
