diff --git a/GPT_SoVITS/TTS_infer_pack/TTS.py b/GPT_SoVITS/TTS_infer_pack/TTS.py
index c677d77..a1eeb28 100644
--- a/GPT_SoVITS/TTS_infer_pack/TTS.py
+++ b/GPT_SoVITS/TTS_infer_pack/TTS.py
@@ -213,6 +213,10 @@ class TTS_Config:
             "cnhuhbert_base_path": self.cnhuhbert_base_path,
         }
         return self.config
+
+    def update_version(self, version:str)->None:
+        self.version = version
+        self.languages = self.v2_languages if self.version=="v2" else self.v1_languages
             
     def __str__(self):
         self.configs = self.update_configs()
@@ -300,13 +304,14 @@ class TTS:
     def init_vits_weights(self, weights_path: str):
         print(f"Loading VITS weights from {weights_path}")
         self.configs.vits_weights_path = weights_path
-        self.configs.save_configs()
         dict_s2 = torch.load(weights_path, map_location=self.configs.device)
         hps = dict_s2["config"]
         if dict_s2['weight']['enc_p.text_embedding.weight'].shape[0] == 322:
-            self.configs.version = "v1"
+            self.configs.update_version("v1")
         else:
-            self.configs.version = "v2"
+            self.configs.update_version("v2")
+        self.configs.save_configs()
+        
         hps["model"]["version"] = self.configs.version
         self.configs.filter_length = hps["data"]["filter_length"]
         self.configs.segment_size = hps["train"]["segment_size"]
diff --git a/api_v2.py b/api_v2.py
index a9faaeb..ea1d0c7 100644
--- a/api_v2.py
+++ b/api_v2.py
@@ -253,13 +253,13 @@ def check_params(req:dict):
     if (text_lang in [None, ""]) :
         return JSONResponse(status_code=400, content={"message": "text_lang is required"})
     elif text_lang.lower() not in tts_config.languages:
-        return JSONResponse(status_code=400, content={"message": "text_lang is not supported"})
+        return JSONResponse(status_code=400, content={"message": f"text_lang: {text_lang} is not supported in version {tts_config.version}"})
     if (prompt_lang in [None, ""]) :
         return JSONResponse(status_code=400, content={"message": "prompt_lang is required"})
     elif prompt_lang.lower() not in tts_config.languages:
-        return JSONResponse(status_code=400, content={"message": "prompt_lang is not supported"})
+        return JSONResponse(status_code=400, content={"message": f"prompt_lang: {prompt_lang} is not supported in version {tts_config.version}"})
     if media_type not in ["wav", "raw", "ogg", "aac"]:
-        return JSONResponse(status_code=400, content={"message": "media_type is not supported"})
+        return JSONResponse(status_code=400, content={"message": f"media_type: {media_type} is not supported"})
     elif media_type == "ogg" and  not streaming_mode:
         return JSONResponse(status_code=400, content={"message": "ogg format is not supported in non-streaming mode"})