1 files changed, 7 insertions, 0 deletions
diff --git a/dynamic_partition_control_android.cc b/dynamic_partition_control_android.cc
index 0c1f0d30..e194670f 100644
--- a/dynamic_partition_control_android.cc
+++ b/dynamic_partition_control_android.cc
@@ -369,6 +369,13 @@ bool DynamicPartitionControlAndroid::PreparePartitionsForUpdate(
       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;