Basically all you need to do is install the OS X 10.7.3 Combo Updater over the existing messed up installation of 10.7.3.
The bad news is that if you already updated to Mac OS X 10.7.3 and you’re having problems, you’re going to have to find a way to use the Combo Updater over the troubled installation.
If your OS X installation is totally screwed up and you can’t use target disk mode, you have a few choices: Not the best situation, but hopefully you have recent Time Machine backups.
Finally, if you’re reading this and haven’t had any problems but you’re now paranoid about the OS X 10.7.3 update, here’s all you need to do to be safe: Backup your Mac with Time Machine, download the Combo Updater and install the update manually.
This page states that Java 8 requires the following: Based on my testing, it appears that the current version of Java 8 (Java 8 Update 25) installs on Mac OS X 10.7.5 without issues.
You may attempt to load the latest Dev Alpha B update onto your Dev Alpha A, however the Dev Alpha A is no longer officially supported as of 10.1.0.1485.
Here are a few final things to do: I must say, compared to the hassle of getting Leopard running in VMware, this was streamlined and painless.