[Q] Can't remember which custom rom I have and want to update topic

I had some troubles with my S3 i9300 with constantly freezing, after investigating about it I decided to install a custom rom with a newer android version than what I had at the time.

Now I can't remember which rom I installed and I want to update to a newer version, after reading in some of the rom install instructions, it mentions some requirements that to tell you the truth, I don't understand about them, or I don't know if my phone has them. I do remember that I installed using the custom recovery menu.

So the question is, can I install a custom rom in my phone? Right now I'm interested in the latest version NeatROM, here is my phone info:

Model: GT-I9300
Android: 4.2.2
Baseband: I9300XXUFME7
Kernel: 3.0.31-702147
se.infra@SEP-86 #1
Tue May 21 18:06:56 KST 2013
Build Number: JDQ39.I9300XXUFME7

Thanks for reading.

[Coding] How much you remember? topic

I would like to hear how much people remember when programming! :shrug:

If you just start up a C++ compiler and start writing a program, what is the most advanced program what you can do just from your brain memory?