Yep, i don't think that any system under Kmeaw will show the relevant text.
In fact, it does show it when you're applying it as an update, but once it's been installed, it will only display 3.55.
Some games require a BR in the drive in order to play, just grab any demo/retail game, it will work. Just go for a used one, no need to spend $50.
Now to check which "hack" is installed, just grab any homebrew (Multiman!), usually they come with 2 files to install.
One labelled with a WT and another one.
Try to install and run the one with WT in it's name, if it works, chances are that you have Wutang/Geohot fw installed.
On the contrary, if you got the other one working, then you might be on Kmeaw.
PS3 Slim v3.55 + CFW Kmeaw - 250G/USB 1T
XBOX 360 Falconv3/Jtag - Liteon74 1.61 - 500G
Wii 4.2 + Cfg UsbLoader - USB 250G | NDS + M3 Real - SDHC 8G | NDS + R4i - SDHC 4G
PS2 + HDLoader - HDD 200G | PSX + PS Hacker