Best firmware for DSO203 HW2.82

Hello!
Few days ago I decide to use my old DSO203. Few years ago, when I have using it last time I have changed firmware to Wildcat, probably. I remember there was some problem with calibration or something. I was stop using this little gem but now I need it.
I was try to find some updated firmware tor this device but I’m not sure whitch I should use. Can You help me?