What is the latest firmware for the MTP6550?

I think there was a misunderstanding. I was asking for firmware for an MTP6550 radio, and DE2RVK was commenting the MTP6650, and that number change is what messed everything up. 5–>6

Is the latest available frimware for MTP6550 radio the MR18A_9335?

I was going crazy. I couldn’t understand why the update option wasn’t showing up.
And it doesn’t appear because they’re different radios. Hahaha.