fix: curl failing

helpers/funcs

@@ -689,7 +689,6 @@ src_path="$src_path"
 END
 }
 format_version_url(){
-    echo FORMAT
     case "$branch" in
         "stable")
             version_url="$stable_url/dzgui.sh"
@@ -702,8 +701,8 @@ format_version_url(){
 }
 download_new_version(){
     local version_url="$(format_version_url)"
-    curl -L "$version_url" > /tmp/dzg.new
-    mv /tmp/dzg.new "$src_path"
+    mv "$src_path" "$src_path.old"
+    curl -Ls "$version_url" > "$src_path"
     rc=$?
     if [[ $rc -eq 0 ]]; then
         dl_changelog