iMac 20'' late 2006 firmware update: skip 1.1?

[tjj]

Is it necessary to update firmware first to 1.1 then to 1.2 or can I go directly for 1.2?
On Apples software dl pages it says (for 1.2) system requirements iMac late 2006 and OS X 10.4.10. It is not stated whether 1.1 is included with 1.2 (as for combo system updates)

Thanks