diff --git a/sysupgrade/amd64/sysup_bios b/sysupgrade/amd64/sysup_bios
new file mode 100644
index 0000000..f11b639
--- /dev/null
+++ b/sysupgrade/amd64/sysup_bios
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+## Dangerous! this operation does not allow normal users to bypass cattools!
+
+AMD64_EFI_SYSUP="https://github.com/miaoermua/CatWrt/releases/download/v23.8/CatWrt.v23.8.x86_64-squashfs-combined-efi.img.gz"
+
+sysupgrade -v $AMD64_EFI_SYSUP