diff --git a/docs/custom_vm.md b/docs/custom_vm.md
index 945798f..fce6da2 100644
--- a/docs/custom_vm.md
+++ b/docs/custom_vm.md
@@ -63,15 +63,23 @@
 As of today (April 2024), ChromiumOS is the only officially supported guest
 payload. We will be adding more OSes in the future.
 
-#### Download from build server
+#### Download ChromiumOS from build server
 
-Here's the link the comprehensive artifacts
-https://pantheon.corp.google.com/storage/browser/chromiumos-image-archive/ferrochrome-public
+Download
+https://storage.googleapis.com/chromiumos-image-archive/ferrochrome-public/R128-15926.0.0/chromiumos_test_image.tar.xz.
+The above will download ferrochrome test image with version `R128-15926.0.0`.
 
-Pick a build, download, and untar `chromiumos_test_image.tar.xz`. We'll boot with `chromiumos_test_image.bin` in it.
+To download latest version, use following code.
 
-To find the latest green build, check following:
-https://pantheon.corp.google.com/storage/browser/_details/chromiumos-image-archive/ferrochrome-public/LATEST-main
+```sh
+URL=https://storage.googleapis.com/chromiumos-image-archive/ferrochrome-public
+LATEST_VERSION=$(curl -s ${URL}/LATEST-main)
+curl -O ${URL}/${LATEST_VERSION}/chromiumos_test_image.tar.xz
+```
+
+To navigate build server artifacts,
+[install gsutil](https://cloud.google.com/storage/docs/gsutil_install).
+`gs://chromiumos-image-archive/ferrochrome-public` is the top level directory for ferrochrome build.
 
 #### Build ChromiumOS for VM