Scummvm core downloads 2.0 not 2.1.0

ios. Retroarch 1.8.3 installs scummvm 2.0 not the latest 2.1.0. However on an older version of retroarch it does download the latest scummvm. How can i get 2.1.0 going

It’s possible that the build failed in 2.1.0. Think it may need some iOS updates.

Why does it load in retroarch 1.4? Ios 8.