diff --git a/hosts/ocaml/browser/sx-platform.js b/hosts/ocaml/browser/sx-platform.js
index acee5482..320bf33c 100644
--- a/hosts/ocaml/browser/sx-platform.js
+++ b/hosts/ocaml/browser/sx-platform.js
@@ -234,35 +234,28 @@
   }
 
   /**
-   * Try loading a pre-compiled .sxbc.json bytecode module.
+   * Try loading a pre-compiled .sxbc bytecode module (SX text format).
    * Returns true on success, null on failure (caller falls back to .sx source).
    */
   function loadBytecodeFile(path) {
-    var bcPath = path.replace(/\.sx$/, '.sxbc.json');
-    var url = _baseUrl + bcPath + _sxbcCacheBust;
+    var sxbcPath = path.replace(/\.sx$/, '.sxbc');
+    var url = _baseUrl + sxbcPath + _sxbcCacheBust;
     try {
       var xhr = new XMLHttpRequest();
       xhr.open("GET", url, false);
       xhr.send();
       if (xhr.status !== 200) return null;
 
-      var json = JSON.parse(xhr.responseText);
-      if (!json.module || json.magic !== 'SXBC') return null;
-
-      var module = {
-        _type: 'dict',
-        bytecode: { _type: 'list', items: json.module.bytecode },
-        constants: { _type: 'list', items: json.module.constants.map(deserializeConstant) },
-      };
-
-      var result = K.loadModule(module);
+      window.__sxbcText = xhr.responseText;
+      var result = K.eval('(load-sxbc (first (parse (host-global "__sxbcText"))))');
+      delete window.__sxbcText;
       if (typeof result === 'string' && result.indexOf('Error') === 0) {
         console.warn("[sx-platform] bytecode FAIL " + path + ":", result);
         return null;
       }
-      console.log("[sx-platform]  ok " + path + " (bytecode)");
       return true;
     } catch(e) {
+      delete window.__sxbcText;
       return null;
     }
   }
diff --git a/shared/static/wasm/sx-platform-2.js b/shared/static/wasm/sx-platform-2.js
index 08b61070..acee5482 100644
--- a/shared/static/wasm/sx-platform-2.js
+++ b/shared/static/wasm/sx-platform-2.js
@@ -339,9 +339,11 @@
     for (var i = 0; i < files.length; i++) {
       var r = loadBytecodeFile(files[i]);
       if (r) { bcCount++; continue; }
-      // Bytecode not available — load source inside the batch (don't break it)
+      // Bytecode not available — end batch, load source, restart batch
+      if (K.endModuleLoad) K.endModuleLoad();
       r = loadSxFile(files[i]);
       if (typeof r === "number") { loaded += r; srcCount++; }
+      if (K.beginModuleLoad) K.beginModuleLoad();
     }
     if (K.endModuleLoad) K.endModuleLoad();
     console.log("[sx-platform] Loaded " + files.length + " files (" + bcCount + " bytecode, " + srcCount + " source, " + loaded + " exprs)");