Updated logic board

The next operating system after High Sierra is Mojave. Here are the hardware requirements for Mojave:

https://support.apple.com/kb/SP777?locale=en_US

"Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top

left of your screen and choose About This Mac. These Mac models are

compatible with macOS Mojave:

• MacBook (Early 2015 or newer)
• MacBook Air (Mid 2012 or newer)
• MacBook Pro (Mid 2012 or newer)
• Mac mini (Late 2012 or newer)
• iMac (Late 2012 or newer)
• iMac Pro (2017)
• Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with recommended Metal-capable graphics cards)"

Not if it is a 2011 logic board. Be specific. If I update the logic board provides no details or context.

I have not done this, but with what little I know it seems that with the latest A1278 Mobo, it might go higher...

https://everymac.com/ultimate-mac-lookup/?search_keywords=A1278

Pre-Installed MacOS:X 10.7.3 (11D2515) Maximum MacOS:X 10.15.x*

https://everymac.com/systems/apple/macbook_pro/specs/macbook-pro-core-i7-2.9-13-mid-2012-unibody-usb3-specs.html

You're welcome, I do hope you'll keep us abreast of your adventure my friend! :)