Boot Shim: Bootstraps UEFI applications on hacked Lumia phones

Boot Shim is a small ARM32 Windows Boot Manager Application that intended to chain-load the normal UEFI environment for UEFI application development on hacked Lumias. As Lumia verifies bootarm.efi or whatever on initialization even when Secure Boot is turned off, this application can provide additional image load capabilities, but you have to develop it from the framework provided.[…]

https://github.com/imbushuo/boot-shim