diff --git a/src/utils/serial.js b/src/utils/serial.js
index b17addf..59428a2 100644
--- a/src/utils/serial.js
+++ b/src/utils/serial.js
@@ -1021,6 +1021,19 @@ async function readPacketNoVerify(port, timeout = 1000) {
     }
 }
 
+function sleep(ms) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+function chunkUint8Array(inputArray, chunkSize) {
+    const result = [];
+    for (let i = 0; i < inputArray.length; i += chunkSize) {
+      // 将每一部分切割成新的Uint8Array
+      result.push(inputArray.slice(i, i + chunkSize));
+    }
+    return result;
+}
+
 /**
  * Sends a packet to the radio.
  * @param {SerialPort} port - The serial port to write to.
@@ -1041,7 +1054,12 @@ async function sendPacket(port, data) {
         // send packet
         //console.log('Sending packet:', packet);
 
-        await writer.write(packet);
+        const chunkedPacket = chunkUint8Array(packet, 64);
+        for(let i = 0; i < chunkedPacket.length; i++){
+            await writer.write(chunkedPacket[i]);
+            await sleep(1); // magic 
+        }
+
         // close writer
         writer.releaseLock();
     } catch (error) {
diff --git a/src/views/list/flash/index.vue b/src/views/list/flash/index.vue
index d4b4ee0..8a86561 100644
--- a/src/views/list/flash/index.vue
+++ b/src/views/list/flash/index.vue
@@ -93,17 +93,20 @@ const flashIt = async () => {
   if(state.protocol == 'Official'){
     await readPacket(_connect, 0x18, 1000);
   }
-  const rawVersion = unpackVersion(state.binaryFile);
-  const _data = new Uint8Array([0x30, 0x5, rawVersion.length, 0x0, ...rawVersion]);
+  // const rawVersion = unpackVersion(state.binaryFile);
+  // const _data = new Uint8Array([0x30, 0x5, rawVersion.length, 0x0, ...rawVersion]);
 
   if(state.protocol == 'Official'){
-    await sendPacket(_connect, _data);
+    await sendPacket(_connect, [48,5,16,0,42,79,69,70,87,45,76,79,83,69,72,85,0,0,0,0]); // magic 
     await readPacket(_connect, 0x18);
   }
   
   const firmware = unpack(state.binaryFile);
   
-  if (firmware.length > 0xefff) throw new Error('Last resort boundary check failed. Whoever touched the code is an idiot.');
+  if (firmware.length > 0xf000) {
+    alert('最后的边界检查失败。不管是谁修改了代码，他都是个白痴。');
+    throw new Error('Last resort boundary check failed. Whoever touched the code is an idiot.');
+  }
 
   for (let i = 0; i < firmware.length; i += 0x100) {
       const data = firmware.slice(i, i + 0x100);