diff --git a/apps/frontend/src/composables/pyroServers.ts b/apps/frontend/src/composables/pyroServers.ts
index 7cbd66dd1..26f529116 100644
--- a/apps/frontend/src/composables/pyroServers.ts
+++ b/apps/frontend/src/composables/pyroServers.ts
@@ -47,9 +47,12 @@ async function PyroFetch<T>(path: string, options: PyroFetchOptions = {}): Promi
     "Access-Control-Allow-Headers": "Authorization",
     "User-Agent": "Pyro/1.0 (https://pyro.host)",
     Vary: "Accept, Origin",
-    "Content-Type": contentType,
   };
 
+  if (contentType !== "none") {
+    headers["Content-Type"] = contentType;
+  }
+
   if (import.meta.client && typeof window !== "undefined") {
     headers.Origin = window.location.origin;
   }
@@ -396,10 +399,13 @@ const reinstallFromMrpack = async (mrpack: File, hardReset: boolean = false) =>
       `servers/${internalServerRefrence.value.serverId}/reinstallFromMrpack`,
     );
 
-    return await PyroFetch(`/reinstallMrpack?hard=${hardResetParam}`, {
+    const formData = new FormData();
+    formData.append("file", mrpack);
+
+    return await PyroFetch(`/reinstallMrpackMultiparted?hard=${hardResetParam}`, {
       method: "POST",
-      contentType: "application/octet-stream",
-      body: mrpack,
+      contentType: "none",
+      body: formData,
       override: auth,
     });
   } catch (error) {
diff --git a/apps/frontend/src/pages/servers/manage/[id]/options/loader.vue b/apps/frontend/src/pages/servers/manage/[id]/options/loader.vue
index 9a93f4f3b..18781fc64 100644
--- a/apps/frontend/src/pages/servers/manage/[id]/options/loader.vue
+++ b/apps/frontend/src/pages/servers/manage/[id]/options/loader.vue
@@ -103,7 +103,7 @@
       />
       <div class="mt-4 flex justify-start gap-4">
         <ButtonStyled :color="isDangerous ? 'red' : 'brand'">
-          <button :disabled="!mrpackFile" @click="reinstallMrpack">
+          <button :disabled="!mrpackFile || isLoading" @click="reinstallMrpack">
             <RightArrowIcon />
             {{
               isSecondPhase