diff --git a/api/100J/HBY100-J.js b/api/100J/HBY100-J.js
index ad9604c..4f8fd44 100644
--- a/api/100J/HBY100-J.js
+++ b/api/100J/HBY100-J.js
@@ -210,7 +210,7 @@ class HBY100JProtocol {
                 }
                 break;
             case 0x05:
-                // 05: 文件更新响应 FB 05 [fileType] [status] FF，status: 1=成功 2=失败
+                // 05: 文件更新响应 FB 05 [fileType] [status] FF，status: 1=成功 2=失败（含开始/结束等阶段应答，以固件为准）
                 if (data.length >= 1) result.fileType = data[0];
                 if (data.length >= 2) result.fileStatus = data[1]; // 1=Success, 2=Failure
                 if (!skipSideEffects && this._fileResponseResolve) this._fileResponseResolve(result);
@@ -704,6 +704,16 @@ class HBY100JProtocol {
             return bleToolPromise.then(ble => ble.sendData(this.bleDeviceId, buf, this.SERVICE_UUID, this.WRITE_UUID));
         };
         const delay = (ms) => new Promise(r => setTimeout(r, ms));
+        const showTailWriteLoading = () => {
+            try {
+                uni.showLoading({ title: '设备写入中…', mask: true });
+            } catch (e) {}
+        };
+        const hideTailWriteLoading = () => {
+            try {
+                uni.hideLoading();
+            } catch (e) {}
+        };
         // 开始包: FA 05 [fileType] [phase=0] [size 4B LE] FF
         const startData = [ft, 0, total & 0xFF, (total >> 8) & 0xFF, (total >> 16) & 0xFF, (total >> 24) & 0xFF];
         // 单包约 507B（500 负载），依赖 MTU；Android 上为整包 write
@@ -720,9 +730,30 @@ class HBY100JProtocol {
                     let seq = 0;
                     const sendNext = (offset) => {
                         if (offset >= total) {
+                            // 结束包 FA 05 01 02 FF：协议(10) 设备应答 FB 05；尾包后设备需落盘，按约 7KB/s 估算等待，避免未写完就超时误走 4G
+                            const WRITE_BPS = 7 * 1024;
+                            const END_ACK_MS = Math.min(600000, Math.max(25000, Math.ceil(total / WRITE_BPS) * 1000 + 25000));
+                            console.log('[100J-蓝牙] 尾包后等待设备写入应答，超时', END_ACK_MS, 'ms（按约 7KB/s 估算落盘）');
                             return delay(DELAY_PACKET)
                                 .then(() => send([ft, 2], ' 结束包'))
-                                .then(() => { emitProgress(99); });
+                                .then(() => {
+                                    showTailWriteLoading();
+                                    return this.waitForFileResponse(END_ACK_MS);
+                                })
+                                .then((ack) => {
+                                    if (ack && ack.fileStatus === 2) {
+                                        return Promise.reject(new Error('设备写入失败，请重试'));
+                                    }
+                                    if (ack && ack.fileStatus === 1) {
+                                        console.log('[100J-蓝牙] 结束包后设备确认写入成功 FB 05');
+                                        emitProgress(99);
+                                        return;
+                                    }
+                                    return Promise.reject(new Error('设备写入确认超时，请稍后重试或靠近设备'));
+                                })
+                                .finally(() => {
+                                    hideTailWriteLoading();
+                                });
                         }
                         const chunk = bytes.slice(offset, Math.min(offset + chunkSize, total));
                         const chunkData = [ft, 1, seq & 0xFF, (seq >> 8) & 0xFF, ...chunk];
@@ -1119,6 +1150,12 @@ function execWithBleFirst(bleExec, httpExec, logName, onWaiting, opts = {}) {
     if (no4G) {
       return Promise.reject(e instanceof Error && e.message ? e : new Error(String((e && e.message) || '蓝牙发送语音失败，请靠近设备后重试')));
     }
+    const msg = (e && e.message) ? String(e.message) : String(e || '');
+    // 分片已发完、仅尾包后等设备落盘应答失败：不应再 4G updateVoice（文件已走蓝牙，重复下发会误导）
+    if (msg.indexOf('设备写入确认超时') !== -1 || msg.indexOf('设备写入失败') !== -1) {
+      console.log('[100J]', logName || '指令', '蓝牙语音尾包阶段失败，不回退4G:', msg);
+      return Promise.reject(e instanceof Error && e.message ? e : new Error(msg));
+    }
     console.log('[100J]', logName || '指令', '蓝牙失败，回退4G');
     return do4G();
   };
diff --git a/pages/100J/audioManager/AudioList.vue b/pages/100J/audioManager/AudioList.vue
index 8666259..827c890 100644
--- a/pages/100J/audioManager/AudioList.vue
+++ b/pages/100J/audioManager/AudioList.vue
@@ -567,9 +567,10 @@
 									clearTimeout(this.upgradeTimer);
 									this.upgradeTimer = null;
 								}
+								// 蓝牙链：尾包 FA 05 01 02 FF 后已收到 FB 05 成功应答，再调 updateVoice，此处再 toast 并返回上一页
 								const title = RES._updateVoiceAfterBleFailed
 									? '蓝牙已下发，云端同步失败可稍后重试'
-									: '音频上传成功';
+									: '设备已确认写入';
 								this.syncVoiceListUseStatus(item);
 								uni.showToast({ title, icon: RES._updateVoiceAfterBleFailed ? 'none' : 'success', duration: 2000 });
 								this.isUpdating = false;