Bootcamp update stopped at version 3.3 I have a 2011 MacBook Pro which I had setup with Bootcamp running Windows 7. I recently upgraded the OS X side to Yosemite as well.

The exact model is: Apple MacBook Pro "Core i7" 2.2 17" Early 2011

Unfortunately my version of Bootcamp (in Windows) is stuck at 3.3. No updates are coming through for it from within the Apple Software Updater. Why is this? I cannot seem to find any reason why my computer wouldn't have the latest version of bootcamp offered to it.

A very similar question has been asked here: How do I update my MacBook Pro to the latest version of BootCamp? but has no answers.

Question: Is Bootcamp v3.3 the maximum version allowed for my software / hardware, or, is there a way other than Apple Software Updater that I should use to update my version of bootcamp? Again, Apple Software Updater is not releasing the latest version to me (despite the fact that it did provide me Bootcamp updates in the past up until v3.3)
Depending on your Windows 7 (32bit/64bit) you may download - booted to Windows 7 - the Bootcamp drivers for Windows 7-32bit Boot Camp Support Software 4.0.4033 or Windows 7-64bit Boot Camp Support Software 5.1.5621 for your MacBook Pro Early 2011 directly.

Overview for all supported Mac models: System requirements to install Windows on your Mac using Boot Camp 

Unzip the downloaded file and start the setup.exe. Or update single drivers with the usual Windows methods.