how to upgrade OSX10.9.5 of mid 2012 Macbook pro

gord4hnd wrote:

how to upgrade OSX10.9.5 of mid 2012 Macbook pro ( 4gb ram) ? which version I should use ?

thanks

Stair step your way up—

OS X 10.11 El Capitan - Technical Specifications:

https://support.apple.com/kb/SP728

verify you are using the Safari browser to download/initiate the macOS links.

The older macOS installer backups on this server:

https://support.apple.com/en-us/HT211683

Hello Everyone, a href=",">https://detailnetworth.com/</a>Go to Software Update in System Preferences to find the OSX10.9.5 Catalina upgrade. Click Upgrade Now and follow the onscreen instructions to begin your upgrade.

10.9 uses GPT file systems, newer system use AFPS file systems. Stair-step as leroydouglas suggests and make good backups at all stable stages to be ready for unexpected shifts.