diff --git a/include/JobQueue.hh b/include/JobQueue.hh
index 36a6d810..36734f92 100644
--- a/include/JobQueue.hh
+++ b/include/JobQueue.hh
@@ -35,13 +35,21 @@ explicit JobQueue(JSContext *cx);
 bool init(JSContext *cx);
 
 /**
- * @brief Ask the embedding for the incumbent global.
+ * @brief Ask the embedding for the host defined data.
  *
- * SpiderMonkey doesn't itself have a notion of incumbent globals as defined
+ * SpiderMonkey doesn't itself have a notion of host defined data as defined
  * by the HTML spec, so we need the embedding to provide this. See
  * dom/script/ScriptSettings.h for details.
+ *
+ * If the embedding has the host defined data, this method should return the
+ * host defined data via the `data` out parameter and return `true`.
+ * The object in the `data` out parameter can belong to any compartment.
+ * If the embedding doesn't need the host defined data, this method should
+ * set the `data` out parameter to `nullptr` and return `true`.
+ * If any error happens while generating the host defined data, this method
+ * should set a pending exception to `cx` and return `false`.
  */
-JSObject *getIncumbentGlobal(JSContext *cx) override;
+bool getHostDefinedData(JSContext *cx, JS::MutableHandle<JSObject *> data) const override;
 
 /**
  * @brief Enqueue a reaction job `job` for `promise`, which was allocated at
diff --git a/mozcentral.version b/mozcentral.version
index 1b304b54..edb1ac10 100644
--- a/mozcentral.version
+++ b/mozcentral.version
@@ -1 +1 @@
-4bdfb2c22e6e4b5600f66612c6d6121fe99769a1
\ No newline at end of file
+250be4ca3c669db9a397456402f68249aa15d8d5
\ No newline at end of file
diff --git a/setup.sh b/setup.sh
index a10d7b66..5a2a2eb2 100755
--- a/setup.sh
+++ b/setup.sh
@@ -54,8 +54,6 @@ cd firefox-source
 # Apply patching
 # making it work for both GNU and BSD (macOS) versions of sed
 sed -i'' -e 's/os not in ("WINNT", "OSX", "Android")/os not in ("WINNT", "Android")/' ./build/moz.configure/pkg.configure # use pkg-config on macOS
-sed -i'' -e '/"WindowsDllMain.cpp"/d' ./mozglue/misc/moz.build # https://discourse.mozilla.org/t/105671, https://bugzilla.mozilla.org/show_bug.cgi?id=1751561
-sed -i'' -e '/"winheap.cpp"/d' ./memory/mozalloc/moz.build # https://bugzilla.mozilla.org/show_bug.cgi?id=1802675
 sed -i'' -e 's/bool Unbox/JS_PUBLIC_API bool Unbox/g' ./js/public/Class.h           # need to manually add JS_PUBLIC_API to js::Unbox until it gets fixed in Spidermonkey
 sed -i'' -e 's/bool js::Unbox/JS_PUBLIC_API bool js::Unbox/g' ./js/src/vm/JSObject.cpp  # same here
 sed -i'' -e 's/shared_lib = self._pretty_path(libdef.output_path, backend_file)/shared_lib = libdef.lib_name/' ./python/mozbuild/mozbuild/backend/recursivemake.py # would generate a Makefile to install the binary files from an invalid path prefix
@@ -66,6 +64,7 @@ sed -i'' -e 's/return !IsIteratorHelpersEnabled()/return false/' ./js/src/vm/Glo
 sed -i'' -e '/MOZ_CRASH_UNSAFE_PRINTF/,/__PRETTY_FUNCTION__);/d' ./mfbt/LinkedList.h # would crash in Debug Build: in `~LinkedList()` it should have removed all this list's elements before the list's destruction
 sed -i'' -e '/MOZ_ASSERT(stackRootPtr == nullptr);/d' ./js/src/vm/JSContext.cpp # would assert false in Debug Build since we extensively use `new JS::Rooted`
 sed -i'' -e 's/"-fuse-ld=ld"/"-ld64" if c_compiler.version > "14.0.0" else "-fuse-ld=ld"/' ./build/moz.configure/toolchain.configure # XCode 15 changed the linker behaviour. See https://developer.apple.com/documentation/xcode-release-notes/xcode-15-release-notes#Linking
+sed -i'' -e 's/defined(XP_WIN)/defined(_WIN32)/' ./mozglue/baseprofiler/public/BaseProfilerUtils.h # this header file is introduced to js/Debug.h in https://phabricator.services.mozilla.com/D221102, but it would be compiled without XP_WIN in this building configuration
 
 cd js/src
 mkdir -p _build
@@ -79,7 +78,11 @@ mkdir -p ../../../../_spidermonkey_install/
   --disable-jemalloc \
   --disable-tests \
   $(if [[ "$OSTYPE" == "darwin"* ]]; then echo "--enable-linker=ld64"; fi) \
-  --enable-optimize 
+  --enable-optimize \
+  --disable-explicit-resource-management
+# disable-explicit-resource-management: Disable the `using` syntax that is enabled by default in SpiderMonkey nightly, otherwise the header files will disagree with the compiled lib .so file
+#                                       when it's using a `IF_EXPLICIT_RESOURCE_MANAGEMENT` macro, e.g., the `enum JSProtoKey` index would be off by 1 (header `JSProto_Uint8Array` 27 will be interpreted as `JSProto_Int8Array` in lib as lib has an extra element)
+#                                       https://bugzilla.mozilla.org/show_bug.cgi?id=1940342
 make -j$CPUS
 echo "Done building spidermonkey"
 
diff --git a/src/JobQueue.cc b/src/JobQueue.cc
index 6dcb548f..928746fd 100644
--- a/src/JobQueue.cc
+++ b/src/JobQueue.cc
@@ -26,8 +26,9 @@ JobQueue::JobQueue(JSContext *cx) {
   finalizationRegistryCallbacks = new JS::PersistentRooted<FunctionVector>(cx);   // Leaks but it's OK since freed at process exit
 }
 
-JSObject *JobQueue::getIncumbentGlobal(JSContext *cx) {
-  return JS::CurrentGlobalOrNull(cx);
+bool JobQueue::getHostDefinedData(JSContext *cx, JS::MutableHandle<JSObject *> data) const {
+  data.set(nullptr); // We don't need the host defined data
+  return true; // `true` indicates no error
 }
 
 bool JobQueue::enqueuePromiseJob(JSContext *cx,