Firmware and CSC

[trazomtg]

Hi,
i have an old Samsung GT-N7000 with these characteristics :

Version Android 4.1.2 JELLYBEAN
BASE N7000XXLSO
Version Kernel 3.0.31-906407
Version number JZ054.N7000XXLSZ

i'd like to root it and change JELLYBEAN to CYANOGEN
i don't find the right firmware to download

can you help me please?
thanks