diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 1984054fa9..832ee2ce28 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -46,7 +46,7 @@ LIBSTDCXX_VERSION="${GCC_VERSION}"	# GCC-specific C++ library
 
 # Low-level Tools (built after GCC)
 NASM_VERSION=2.16.03	# x86 assembly
-IASL_VERSION=20250404	# ACPI compiler
+IASL_VERSION=20250807	# ACPI compiler
 
 # Clang/LLVM Toolchain (alternative to GCC, built separately)
 CLANG_VERSION=18.1.8
@@ -86,7 +86,7 @@ MPC_BASE_URL="https://ftpmirror.gnu.org/mpc"
 GCC_BASE_URL="https://ftpmirror.gnu.org/gcc/gcc-${GCC_VERSION}"
 LIBSTDCXX_BASE_URL="${GCC_BASE_URL}"
 BINUTILS_BASE_URL="https://ftpmirror.gnu.org/binutils"
-IASL_BASE_URL="https://downloadmirror.intel.com/852044"
+IASL_BASE_URL="https://downloadmirror.intel.com/864114"
 # CLANG toolchain archive locations
 LLVM_BASE_URL="https://github.com/llvm/llvm-project/releases/download/llvmorg-${CLANG_VERSION}"
 CLANG_BASE_URL="https://github.com/llvm/llvm-project/releases/download/llvmorg-${CLANG_VERSION}"
diff --git a/util/crossgcc/patches/acpica-unix-20250404_iasl.patch b/util/crossgcc/patches/acpica-unix-20250807_iasl.patch
similarity index 100%
rename from util/crossgcc/patches/acpica-unix-20250404_iasl.patch
rename to util/crossgcc/patches/acpica-unix-20250807_iasl.patch
diff --git a/util/crossgcc/sum/acpica-unix-20250404.tar.gz.cksum b/util/crossgcc/sum/acpica-unix-20250404.tar.gz.cksum
deleted file mode 100644
index 83d38deb24..0000000000
--- a/util/crossgcc/sum/acpica-unix-20250404.tar.gz.cksum
+++ /dev/null
@@ -1 +0,0 @@
-aeff4d1254e73263b4f2c6f7d1e96af47fa219e0  tarballs/acpica-unix-20250404.tar.gz
diff --git a/util/crossgcc/sum/acpica-unix-20250807.tar.gz.cksum b/util/crossgcc/sum/acpica-unix-20250807.tar.gz.cksum
new file mode 100644
index 0000000000..188ab9995b
--- /dev/null
+++ b/util/crossgcc/sum/acpica-unix-20250807.tar.gz.cksum
@@ -0,0 +1 @@
+76f0529964955679178714bc580eb560e52fab12  tarballs/acpica-unix-20250807.tar.gz