MacBook Pro macOS Upgrade Support

I’m still on macOS Monterey 12.3.1 on a mid-2015 MacBook Pro and need it brought up to macOS 13 or any newer, supported release. I’m flexible on the exact version—as long as the machine stays fully functional—but it must be a clean, reliable install that Apple still signs and updates.

What has to stay intact after the upgrade are all my existing applications and user files; fresh system settings are fine. I already keep my own Time Machine and clone backups, so you can proceed without building another archive.

I’ll give you remote access (or meet locally if you’re nearby) and can supply a bootable USB if that streamlines things. The end point I expect is a rebooted, stable Mac that opens every app and document just as before, now running the newer macOS.

If you’ve successfully updated legacy MacBook Pros like this and can guide the entire process—firmware checks, installer prep, post-install validation—let’s get started.