diff --git a/dynamic_partition_control_android.cc b/dynamic_partition_control_android.cc
index 0c1f0d3..e194670 100644
--- a/dynamic_partition_control_android.cc
+++ b/dynamic_partition_control_android.cc
@@ -369,6 +369,13 @@
       return PrepareSnapshotPartitionsForUpdate(
           source_slot, target_slot, manifest);
     }
+
+    if (GetVirtualAbFeatureFlag().IsLaunch() && !target_supports_snapshot_) {
+      LOG(ERROR) << "Cannot downgrade to a build that does not support "
+                 << "snapshots because this device launches with Virtual A/B.";
+      return false;
+    }
+
     if (!snapshot_->CancelUpdate()) {
       LOG(ERROR) << "Cannot cancel previous update.";
       return false;
diff --git a/dynamic_partition_control_interface.h b/dynamic_partition_control_interface.h
index 9c4c2e8..9c18973 100644
--- a/dynamic_partition_control_interface.h
+++ b/dynamic_partition_control_interface.h
@@ -36,6 +36,7 @@
   constexpr explicit FeatureFlag(Value value) : value_(value) {}
   constexpr bool IsEnabled() const { return value_ != Value::NONE; }
   constexpr bool IsRetrofit() const { return value_ == Value::RETROFIT; }
+  constexpr bool IsLaunch() const { return value_ == Value::LAUNCH; }
 
  private:
   Value value_;