(adsbygoogle = window.adsbygoogle || []).push({}); Hpw to go about it? Also wondering if i will lose all my roms n pkg files

Changing the CFW is as easy as upgrading OFW.

so i can update system in restore mode from one cfw straight to another? or do i need to go back to ofw then install cfw again?
going from elite cfw v4 to probly kmeaw