diff --git a/timm/models/edgenext.py b/timm/models/edgenext.py
index a81bd9b0..422d4f2c 100644
--- a/timm/models/edgenext.py
+++ b/timm/models/edgenext.py
@@ -50,6 +50,12 @@ default_cfgs = dict(
         url="https://github.com/mmaaz60/EdgeNeXt/releases/download/v1.1/edgenext_small_usi.pth",
         crop_pct=0.95, test_input_size=(3, 320, 320), test_crop_pct=1.0,
     ),
+    # edgenext_base=_cfg(
+    #     url="https://github.com/mmaaz60/EdgeNeXt/releases/download/v1.2/edgenext_base_usi.pth"),
+    edgenext_base=_cfg(  # USI weights
+        url="https://github.com/mmaaz60/EdgeNeXt/releases/download/v1.2/edgenext_base_usi.pth",
+        crop_pct=0.95, test_input_size=(3, 320, 320), test_crop_pct=1.0,
+    ),
 
     edgenext_small_rw=_cfg(
         url='https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-attn-weights/edgenext_small_rw-sw-b00041bb.pth',
@@ -154,7 +160,7 @@ class CrossCovarianceAttn(nn.Module):
 
     def forward(self, x):
         B, N, C = x.shape
-        qkv = self.qkv(x).reshape(B, N, 3, self.num_heads, C // self.num_heads).permute(2, 0, 3, 4, 1)
+        qkv = self.qkv(x).reshape(B, N, 3, self.num_heads, -1).permute(2, 0, 3, 4, 1)
         q, k, v = qkv.unbind(0)
 
         # NOTE, this is NOT spatial attn, q, k, v are B, num_heads, C, L -->  C x C attn map
@@ -217,7 +223,8 @@ class SplitTransposeBlock(nn.Module):
         shortcut = x
 
         # scales code re-written for torchscript as per my res2net fixes -rw
-        spx = torch.split(x, self.width, 1)
+        # NOTE torch.split(x, self.width, 1) causing issues with ONNX export
+        spx = x.chunk(len(self.convs) + 1, dim=1)
         spo = []
         sp = spx[0]
         for i, conv in enumerate(self.convs):
@@ -545,13 +552,19 @@ def edgenext_small(pretrained=False, **kwargs):
     return _create_edgenext('edgenext_small', pretrained=pretrained, **model_kwargs)
 
 
+@register_model
+def edgenext_base(pretrained=False, **kwargs):
+    # 18.51M & 3840.93M @ 256 resolution
+    # 82.5% (normal) 83.7% (USI) Top-1 accuracy
+    # AA=True, Mixup & Cutmix, DropPath=0.1, BS=4096, lr=0.006, multi-scale-sampler
+    # Jetson FPS=xx.xx versus xx.xx for MobileViT_S
+    # For A100: FPS @ BS=1: xxx.xx & @ BS=256: xxxx.xx
+    model_kwargs = dict(depths=[3, 3, 9, 3], dims=[80, 160, 288, 584], **kwargs)
+    return _create_edgenext('edgenext_base', pretrained=pretrained, **model_kwargs)
+
+
 @register_model
 def edgenext_small_rw(pretrained=False, **kwargs):
-    # 5.59M & 1260.59M @ 256 resolution
-    # 79.43% Top-1 accuracy
-    # AA=True, No Mixup & Cutmix, DropPath=0.1, BS=4096, lr=0.006, multi-scale-sampler
-    # Jetson FPS=20.47 versus 18.86 for MobileViT_S
-    # For A100: FPS @ BS=1: 172.33 & @ BS=256: 3010.25 versus FPS @ BS=1: 93.84 & @ BS=256: 1785.92 for MobileViT_S
     model_kwargs = dict(
         depths=(3, 3, 9, 3), dims=(48, 96, 192, 384),
         downsample_block=True, conv_bias=False, stem_type='overlap', **kwargs)