diff --git a/GPT_SoVITS/process_ckpt.py b/GPT_SoVITS/process_ckpt.py
index 36ef4347..20db9b19 100644
--- a/GPT_SoVITS/process_ckpt.py
+++ b/GPT_SoVITS/process_ckpt.py
@@ -1,37 +1,44 @@
 import traceback
 from collections import OrderedDict
 from time import time as ttime
-import shutil,os
+import shutil
+import os
 import torch
 from tools.i18n.i18n import I18nAuto
 
 i18n = I18nAuto()
 
-def my_save(fea,path):#####fix issue: torch.save doesn't support chinese path
-    dir=os.path.dirname(path)
-    name=os.path.basename(path)
-    tmp_path="%s.pth"%(ttime())
-    torch.save(fea,tmp_path)
-    shutil.move(tmp_path,"%s/%s"%(dir,name))
 
-'''
-00:v1
-01:v2
-02:v3
-03:v3lora
+def my_save(fea, path):  #####fix issue: torch.save doesn't support chinese path
+    dir = os.path.dirname(path)
+    name = os.path.basename(path)
+    tmp_path = "%s.pth" % (ttime())
+    torch.save(fea, tmp_path)
+    shutil.move(tmp_path, "%s/%s" % (dir, name))
 
 
-'''
 from io import BytesIO
-def my_save2(fea,path):
+
+model_version2byte = {
+    "v3": b"03",
+    "v4": b"04",
+    "v2Pro": b"05",
+    "v2ProPlus": b"06",
+}
+
+
+def my_save2(fea, path, model_version):
     bio = BytesIO()
     torch.save(fea, bio)
     bio.seek(0)
     data = bio.getvalue()
-    data = b'03' + data[2:]###temp for v3lora only, todo
-    with open(path, "wb") as f: f.write(data)
+    byte = model_version2byte[model_version]
+    data = byte + data[2:]
+    with open(path, "wb") as f:
+        f.write(data)
 
-def savee(ckpt, name, epoch, steps, hps,lora_rank=None):
+
+def savee(ckpt, name, epoch, steps, hps, model_version=None, lora_rank=None):
     try:
         opt = OrderedDict()
         opt["weight"] = {}
@@ -42,49 +49,73 @@ def savee(ckpt, name, epoch, steps, hps,lora_rank=None):
         opt["config"] = hps
         opt["info"] = "%sepoch_%siteration" % (epoch, steps)
         if lora_rank:
-            opt["lora_rank"]=lora_rank
-            my_save2(opt, "%s/%s.pth" % (hps.save_weight_dir, name))
+            opt["lora_rank"] = lora_rank
+            my_save2(opt, "%s/%s.pth" % (hps.save_weight_dir, name), model_version)
+        elif model_version != None and "Pro" in model_version:
+            my_save2(opt, "%s/%s.pth" % (hps.save_weight_dir, name), model_version)
         else:
             my_save(opt, "%s/%s.pth" % (hps.save_weight_dir, name))
         return "Success."
     except:
         return traceback.format_exc()
 
-head2version={
-    b'00':["v1","v1",False],
-    b'01':["v2","v2",False],
-    b'02':["v2","v3",False],
-    b'03':["v2","v3",True],
+
+"""
+00:v1
+01:v2
+02:v3
+03:v3lora
+04:v4lora
+05:v2Pro
+06:v2ProPlus
+"""
+head2version = {
+    b"00": ["v1", "v1", False],
+    b"01": ["v2", "v2", False],
+    b"02": ["v2", "v3", False],
+    b"03": ["v2", "v3", True],
+    b"04": ["v2", "v4", True],
+    b"05": ["v2", "v2Pro", False],
+    b"06": ["v2", "v2ProPlus", False],
 }
-hash_pretrained_dict={
-    "dc3c97e17592963677a4a1681f30c653":["v2","v2",False],#s2G488k.pth#sovits_v1_pretrained
-    "43797be674a37c1c83ee81081941ed0f":["v2","v3",False],#s2Gv3.pth#sovits_v3_pretrained
-    "6642b37f3dbb1f76882b69937c95a5f3":["v2","v2",False],#s2G2333K.pth#sovits_v2_pretrained
+hash_pretrained_dict = {
+    "dc3c97e17592963677a4a1681f30c653": ["v2", "v2", False],  # s2G488k.pth#sovits_v1_pretrained
+    "43797be674a37c1c83ee81081941ed0f": ["v2", "v3", False],  # s2Gv3.pth#sovits_v3_pretrained
+    "6642b37f3dbb1f76882b69937c95a5f3": ["v2", "v2", False],  # s2G2333K.pth#sovits_v2_pretrained
+    "4f26b9476d0c5033e04162c486074374": ["v2", "v4", False],  # s2Gv4.pth#sovits_v4_pretrained
+    "c7e9fce2223f3db685cdfa1e6368728a": ["v2", "v2Pro", False],  # s2Gv2Pro.pth#sovits_v2Pro_pretrained
+    "66b313e39455b57ab1b0bc0b239c9d0a": ["v2", "v2ProPlus", False],  # s2Gv2ProPlus.pth#sovits_v2ProPlus_pretrained
 }
 import hashlib
+
+
 def get_hash_from_file(sovits_path):
-    with open(sovits_path,"rb")as f:data=f.read(8192)
+    with open(sovits_path, "rb") as f:
+        data = f.read(8192)
     hash_md5 = hashlib.md5()
     hash_md5.update(data)
     return hash_md5.hexdigest()
+
+
 def get_sovits_version_from_path_fast(sovits_path):
     ###1-if it is pretrained sovits models, by hash
-    hash=get_hash_from_file(sovits_path)
+    hash = get_hash_from_file(sovits_path)
     if hash in hash_pretrained_dict:
         return hash_pretrained_dict[hash]
-    ###2-new weights or old weights, by head
-    with open(sovits_path,"rb")as f:version=f.read(2)
-    if version!=b"PK":
+    ###2-new weights, by head
+    with open(sovits_path, "rb") as f:
+        version = f.read(2)
+    if version != b"PK":
         return head2version[version]
     ###3-old weights, by file size
-    if_lora_v3=False
-    size=os.path.getsize(sovits_path)
-    '''
+    if_lora_v3 = False
+    size = os.path.getsize(sovits_path)
+    """
             v1weights:about 82942KB
                 half thr:82978KB
             v2weights:about 83014KB
             v3weights:about 750MB
-    '''
+    """
     if size < 82978 * 1024:
         model_version = version = "v1"
     elif size < 700 * 1024 * 1024:
@@ -92,15 +123,16 @@ def get_sovits_version_from_path_fast(sovits_path):
     else:
         version = "v2"
         model_version = "v3"
-    return version,model_version,if_lora_v3
+    return version, model_version, if_lora_v3
+
 
 def load_sovits_new(sovits_path):
-    f=open(sovits_path,"rb")
-    meta=f.read(2)
-    if meta!="PK":
-        data = b'PK' + f.read()
+    f = open(sovits_path, "rb")
+    meta = f.read(2)
+    if meta != b"PK":
+        data = b"PK" + f.read()
         bio = BytesIO()
         bio.write(data)
         bio.seek(0)
         return torch.load(bio, map_location="cpu", weights_only=False)
-    return torch.load(sovits_path,map_location="cpu", weights_only=False)
\ No newline at end of file
+    return torch.load(sovits_path, map_location="cpu", weights_only=False)