diff --git a/timm/models/swin_transformer_v2.py b/timm/models/swin_transformer_v2.py
index a4acf5d2..861676e9 100644
--- a/timm/models/swin_transformer_v2.py
+++ b/timm/models/swin_transformer_v2.py
@@ -614,15 +614,16 @@ class SwinTransformerV2(nn.Module):
 def checkpoint_filter_fn(state_dict, model):
     state_dict = state_dict.get('model', state_dict)
     state_dict = state_dict.get('state_dict', state_dict)
-    if 'head.fc.weight' in state_dict:
-        return state_dict
+    native_checkpoint = 'head.fc.weight' in state_dict
     out_dict = {}
     import re
     for k, v in state_dict.items():
         if any([n in k for n in ('relative_position_index', 'relative_coords_table', 'attn_mask')]):
             continue  # skip buffers that should not be persistent
-        k = re.sub(r'layers.(\d+).downsample', lambda x: f'layers.{int(x.group(1)) + 1}.downsample', k)
-        k = k.replace('head.', 'head.fc.')
+        if not native_checkpoint:
+            # skip layer remapping for updated checkpoints
+            k = re.sub(r'layers.(\d+).downsample', lambda x: f'layers.{int(x.group(1)) + 1}.downsample', k)
+            k = k.replace('head.', 'head.fc.')
         out_dict[k] = v
       
     return out_dict