R U an engineer? You must be a BIOS engineer to find me here! This is home of RU.EXE and RU.EFI.
There are some requests for ARM version of RU.EFI. I think I can just make it compiled passed using AARCH64. ARM is very new to me so it will take some time. I will try that when I have time.
Updated: It was done in version 5.40.0433.