diff --git a/sos/sos b/sos/sos
index 3ae35aa..6e835df 100755
--- a/sos/sos
+++ b/sos/sos
@@ -1,13 +1,6 @@
 #!/bin/bash
 set -euo pipefail
 
-# sos upload <server> <label:tag> <file>
-
-# example:
-# sos upload tools.dropshell.app file:latest ./file.txt
-
-# this will upload the file to the server, and return the download URL
-
 
 # get dropshell
 TEMP_DIR=$(mktemp -d)
@@ -74,7 +67,7 @@ function upload() {
 
 
     # upload the file
-    TARGET_URL="https://$server/upload"
+    TARGET_SERVER="https://$server"
     echo "Uploading $file to $TARGET_URL"
 
     DATETIME=$(datetime)
@@ -84,6 +77,11 @@ function upload() {
     LABELTAGS_JSON=$(printf '"%s",' "${LABELTAGS[@]}")
     LABELTAGS_JSON="[${LABELTAGS_JSON%,}]"
 
+    # trip whitespace from the file path
+    LOCALHASH=$("${DROPSHELL}" hash "${file}" | tr -d '[:space:]')
+    echo "Local hash: $LOCALHASH"
+
+
 METADATA_JSON=$(cat <<EOF
 {
   "labeltags": $LABELTAGS_JSON,
@@ -102,27 +100,28 @@ EOF
         WRITE_TOKEN=$(cat "$TOKENPATH")
     fi
 
-    # trip whitespace from the file path
-    LOCALHASH=$("${DROPSHELL}" hash "${file}" | tr -d '[:space:]')
-    echo "Local hash: $LOCALHASH"
 
-    FILELINE="-F \"file=@${file}\""
-    EXISTSJSON=$(eval "curl -s \"https://$server/exists/$LOCALHASH\"")
+    EXISTSJSON=$(eval "curl -s \"https://$server/exists/$LOCALHASH\"") || die "Failed to check if file exists"
     DOESEXIT=$(echo "$EXISTSJSON" | jq -r '.exists')
-    if [ "$DOESEXIT" == "true" ]; then
-        echo "File already exists, skipping upload"
-        FILELINE=""
-    fi
 
     HASH=""
 
-    # shellcheck disable=SC2086
-    curl --progress-bar -X PUT \
-    -H "Authorization: Bearer ${WRITE_TOKEN}" \
-    $FILELINE \
-    -F "metadata=${METADATA_JSON}" \
-    "$TARGET_URL" \
-    || die "Failed to upload $file to $TARGET_URL"
+    if [ "$DOESEXIT" == "true" ]; then
+        echo "File already exists, skipping upload"
+        # UPDATE the metadata
+        curl -X PUT -H "Authorization: Bearer ${WRITE_TOKEN}" \
+            -F "metadata=${METADATA_JSON}" \
+            -F "hash=${LOCALHASH}" \
+            "$TARGET_SERVER/update" \
+            || die "Failed to upload $file to $TARGET_URL"
+    else
+        # UPLOAD the file + metadata
+        curl -X PUT -H "Authorization: Bearer ${WRITE_TOKEN}" \
+            -F "metadata=${METADATA_JSON}" \
+            -F "file=@${file}" \
+            "$TARGET_SERVER/upload" \
+            || die "Failed to upload $file to $TARGET_URL"
+    fi
 
     echo " "
     echo " "