Trying to upgrade NacOS from 10.9 (Mid 2014 Macbook Pro Retina)

[BenEdwards]

Hi. I just got a Mid 2014 Macbook Pro Retina and its got MacOS 10.9 on it. Ime having a real problem upgrading. I cant sign in to App Store as the version is before two factor authentication came in. I spoke to Apple Support and they said use a APP-SPECIFIC PASSWORDS but it wont work.

It keeps saying I have got login credentials wrong more than once when I try to use the APP-SPECIFIC PASSWORD. Ive tried resenting password and trying again but no joy.

Any ideas how I can solve this?

Ben

 

[elvisimprsntr]

Assuming you lawfully acquired or were given the MBP, did the previous owner disable Find My and sign out of all Apple services? That might be why it is throwing a credential error.

If you haven't tried already, try resetting the MBP to factory defaults.

How to reset your MacBook or Mac to factory default

Apple Mac is one of the most reliable laptops on the planet, and although you don’t need to reset it until you sell your Mac, you can still run into some issues. In such cases, resetting or erasing your Mac may be the best solution. You can also factory reset your Mac in just a […]

techyuncle.com

Then set it up as a new MBP with your credentials.

 

[BenEdwards]

Worked it out. You can actually download Sierra from https://support.apple.com/en-gb/HT2...LJ0MVXYU9eNAGtzt9KRSk3RWZbZ6nqn2uCHAome0PilBc. I put it on a memory stick and installed it fine.

 

[elvisimprsntr]

Worked it out. You can actually download Sierra from https://support.apple.com/en-gb/HT2...LJ0MVXYU9eNAGtzt9KRSk3RWZbZ6nqn2uCHAome0PilBc. I put it on a memory stick and installed it fine.

If it's a '14 model, it can run Big Sur (macOS 11)

 

[BenEdwards]

If it's a '14 model, it can run Big Sur (macOS 11)

I know but as it is not possible to log in to Apple ID on 10.9 I needed a version that this worked on and 10.12 does. From there I can install any version I like from App Store.