Last version of UE4 to not force metal on iOS?

Hi all. I was wondering what the last version of UE4 that allow for packaging iOS with opengl es2 was or alternately if there was still some way to not force the use of metal? Client asking about iPad 4th generation (so ios 10 still but no metal support).

Would appreciate the tip if anyone has the knowledge to hand. Have confirmed works with 4.9.2 but have bad internet so thought I’d ask before downloading all the subsequent versions up to 4.21.

Ah. First guess was 4.16 which turned out to be right.