diff --git a/src/QmcWasm/qmc.hpp b/src/QmcWasm/qmc.hpp
index c56c8e9..3f26ecf 100644
--- a/src/QmcWasm/qmc.hpp
+++ b/src/QmcWasm/qmc.hpp
@@ -131,6 +131,10 @@ public:
     int PreDecode(std::string ext) {
         cipherType = checkType(ext);
         size_t tailSize = 0;
+        if (cipherType == "invalid" || cipherType == "STag") {
+            error = "file is invalid or not supported (Please downgrade your app).";
+            return -1;
+        }
         if (cipherType == "QTag") {
             tailSize = 8;
         }
@@ -156,10 +160,6 @@ public:
             }
             rawKeyBuf = tmp;
         }
-        if (cipherType == "invalid") {
-            error = "file is invalid or not supported(Please downgrade your app.)";
-            return -1;
-        }
         return keySize + tailSize;
     }
 
diff --git a/src/decrypt/index.ts b/src/decrypt/index.ts
index 58d09bb..e7c464b 100644
--- a/src/decrypt/index.ts
+++ b/src/decrypt/index.ts
@@ -50,9 +50,12 @@ export async function Decrypt(file: FileInfo, config: Record<string, any>): Prom
     case 'tm3': // QQ Music IOS Mp3
       rt_data = await RawDecrypt(file.raw, raw.name, 'mp3');
       break;
+    case 'qmc0': //QQ Music Android Mp3
     case 'qmc3': //QQ Music Android Mp3
     case 'qmc2': //QQ Music Android Ogg
-    case 'qmc0': //QQ Music Android Mp3
+    case 'qmc4': //QQ Music Android Ogg
+    case 'qmc6': //QQ Music Android Ogg
+    case 'qmc8': //QQ Music Android Ogg
     case 'qmcflac': //QQ Music Android Flac
     case 'qmcogg': //QQ Music Android Ogg
     case 'tkm': //QQ Music Accompaniment M4a
@@ -68,6 +71,7 @@ export async function Decrypt(file: FileInfo, config: Record<string, any>): Prom
     case 'mggl': //QQ Music Mac
     case 'mflac': //QQ Music New Flac
     case 'mflac0': //QQ Music New Flac
+    case 'mflach': //QQ Music New Flac
     case 'mgg': //QQ Music New Ogg
     case 'mgg1': //QQ Music New Ogg
     case 'mgg0':
@@ -98,6 +102,8 @@ export async function Decrypt(file: FileInfo, config: Record<string, any>): Prom
     case 'x3m':
       rt_data = await XimalayaDecrypt(file.raw, raw.name, raw.ext);
       break;
+    case 'mflach': //QQ Music New Flac
+      throw '网页版无法解锁，请使用<a target="_blank" href="https://git.unlock-music.dev/um/cli">CLI版本</a>'
     default:
       throw '不支持此文件格式';
   }
diff --git a/src/decrypt/qmc.ts b/src/decrypt/qmc.ts
index ebeebfe..3154f90 100644
--- a/src/decrypt/qmc.ts
+++ b/src/decrypt/qmc.ts
@@ -28,8 +28,16 @@ export const HandlerMap: { [key: string]: Handler } = {
   qmc0: { ext: 'mp3', version: 2 },
   qmc2: { ext: 'ogg', version: 2 },
   qmc3: { ext: 'mp3', version: 2 },
+  qmc4: { ext: 'ogg', version: 2 },
+  qmc6: { ext: 'ogg', version: 2 },
+  qmc8: { ext: 'ogg', version: 2 },
   bkcmp3: { ext: 'mp3', version: 1 },
+  bkcm4a: { ext: 'm4a', version: 1 },
   bkcflac: { ext: 'flac', version: 1 },
+  bkcwav: { ext: 'wav', version: 1 },
+  bkcape: { ext: 'ape', version: 1 },
+  bkcogg: { ext: 'ogg', version: 1 },
+  bkcwma: { ext: 'wma', version: 1 },
   tkm: { ext: 'm4a', version: 1 },
   '666c6163': { ext: 'flac', version: 1 },
   '6d7033': { ext: 'mp3', version: 1 },
@@ -131,7 +139,9 @@ export class QmcDecoder {
   private searchKey() {
     const last4Byte = this.file.slice(-4);
     const textEnc = new TextDecoder();
-    if (textEnc.decode(last4Byte) === 'QTag') {
+    if (textEnc.decode(last4Byte) === 'STag') {
+      throw new Error('文件中没有写入密钥，无法解锁，请降级App并重试');
+    } else if (textEnc.decode(last4Byte) === 'QTag') {
       const sizeBuf = this.file.slice(-8, -4);
       const sizeView = new DataView(sizeBuf.buffer, sizeBuf.byteOffset);
       const keySize = sizeView.getUint32(0, false);