Unable to find firmware for EOS 5D Mark IV

[AWG]

Require up date my firmware from version 1.1.2 to current. unable to find any legacy firmware.

Any suggestions

[shadowsports]

Greetings,

v1.4.0 .  Is the current FW available as of this post. 

Firmware is cumulative so you do not need to apply updates incrementally You can go from where you are now to the latest (in one step) without an issue. 

5D Mark IV support

[MikeSowsun]

As “shadowsports” says, there is no need to upgrade the firmware in individual steps, but if you are looking for a specific older firmware version, you can find them all, at this link here: 

Canon EOS DSLR and mirrorless camera original firmwares