Chosen Solution
Can I upgrade my late 2011 MacBook Pro with a logic board newer than 2012?
No. The Mid 2012 logic boards were the last before the retinas started. The best you can do is the 2.9 GHz i7 2012 board. MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board UPDATE 2/28/19 Good to visit with you on the phone. To go back over what we talked about (keeping the 2011 logic board and upgrading the machine: High Sierra is the max. I recommend the Samsung 860 SSD drive. https://www.amazon.com/SanDisk-SSD-PLUS-… Replace the hard drive cable with the one from the 2012 machine: MacBook Pro 13" Unibody Mid 2012 Hard Drive Cable Replacement Here are the protection steps I take
Use a SATA to USB external adapter. Format the new drive APFS. Then install High Sierra. Now use migration assistant to move your old APPS and data and user. https://www.walmart.com/ip/StarTech-USB-…