updates

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

train.py

@@ -202,10 +202,6 @@ def train():
         model.train()
         print(('\n' + '%10s' * 8) % ('Epoch', 'gpu_mem', 'GIoU', 'obj', 'cls', 'total', 'targets', 'img_size'))
 
-        # Update scheduler
-        if epoch > 0:
-            scheduler.step()
-
         # Freeze backbone at epoch 0, unfreeze at epoch 1 (optional)
         freeze_backbone = False
         if freeze_backbone and epoch < 2:
@@ -286,6 +282,9 @@ def train():
 
             # end batch ------------------------------------------------------------------------------------------------
 
+        # Update scheduler
+        scheduler.step()
+
         # Process epoch results
         final_epoch = epoch + 1 == epochs
         if opt.prebias: