mobile

Hi guys. I recently remembered my old s1 and I want to update it to latest official omnirom but I need a little help as I kinda forgot the steps.
Currently the phone has this configuration
And I need help as in what recovery should I use... If I remember I need a kernel as it also roots and installs a custom recovery but will it be compatible and can I go from gb to ll or...
Maybe if you can give me some links...
Thanks