diff --git a/iso/README.md b/iso/README.md
index 727162f..2c43629 100644
--- a/iso/README.md
+++ b/iso/README.md
@@ -48,7 +48,7 @@ sh iso/builder/build-in-container.sh --cache-dir /path/to/cache
 - The builder image is automatically rebuilt if the local tag exists for the wrong architecture.
 - The live ISO boots with Debian `live-boot` `toram`, so the read-only medium is copied into RAM during boot and the runtime no longer depends on the original USB/BMC virtual media staying present.
 - Target systems need enough RAM for the full compressed live medium plus normal runtime overhead, or boot may fail before reaching the TUI.
-- The NVIDIA variant installs DCGM 4 packages matched to the CUDA user-mode driver major version. For driver branch `590` / CUDA `13.x`, the package family is `datacenter-gpu-manager-4-cuda13` rather than legacy `datacenter-gpu-manager`.
+- The NVIDIA variant installs DCGM 4 packages matched to the CUDA user-mode driver major version. For driver branch `580` / CUDA `13.x`, the package family is `datacenter-gpu-manager-4-cuda13` rather than legacy `datacenter-gpu-manager`.
 - Override the container platform only if you know why:
 
 ```sh
diff --git a/iso/builder/VERSIONS b/iso/builder/VERSIONS
index 060fd23..ce494df 100644
--- a/iso/builder/VERSIONS
+++ b/iso/builder/VERSIONS
@@ -1,7 +1,7 @@
 DEBIAN_VERSION=12
 DEBIAN_KERNEL_ABI=auto
-NVIDIA_DRIVER_VERSION=590.48.01
-NVIDIA_FABRICMANAGER_VERSION=590.48.01-1
+NVIDIA_DRIVER_VERSION=580.126.20
+NVIDIA_FABRICMANAGER_VERSION=580.126.20-1
 NCCL_VERSION=2.28.9-1
 NCCL_CUDA_VERSION=13.0
 NCCL_SHA256=2e6faafd2c19cffc7738d9283976a3200ea9db9895907f337f0c7e5a25563186
@@ -9,7 +9,7 @@ NCCL_TESTS_VERSION=2.13.10
 NVCC_VERSION=12.8
 CUBLAS_VERSION=13.1.1.3-1
 CUDA_USERSPACE_VERSION=13.0.96-1
-DCGM_VERSION=4.6.0-1
+DCGM_VERSION=4.5.2-1
 JOHN_JUMBO_COMMIT=67fcf9fe5a
 ROCM_VERSION=6.3.4
 ROCM_SMI_VERSION=7.4.0.60304-76~22.04
diff --git a/iso/builder/config/package-lists/bee-nvidia.list.chroot b/iso/builder/config/package-lists/bee-nvidia.list.chroot
index 8629fb5..a3d7c85 100644
--- a/iso/builder/config/package-lists/bee-nvidia.list.chroot
+++ b/iso/builder/config/package-lists/bee-nvidia.list.chroot
@@ -2,7 +2,7 @@
 # Validate uses dcgmi diagnostics; Burn uses dcgmproftester as the official
 # NVIDIA max-compute recipe. The smoketest/runtime contract treats
 # dcgmproftester as required in the LiveCD.
-# DCGM 4 is packaged per CUDA major. The image ships NVIDIA driver 590 with
+# DCGM 4 is packaged per CUDA major. The image ships NVIDIA driver 580 with
 # CUDA 13 userspace, so install the CUDA 13 build plus proprietary components
 # explicitly.
 nvtop