pytorch 1.7. The model saved by X training cannot be loaded in version 1.4 or earlier

pytorch1.6.x And higher , There is a difference between saving a model and a lower version , Therefore, the high version of the saved model fails to load in the low version :

We just need to be in a higher version torch When saving under , Set up _use_new_zipfile_serialization=False

weights = 'xxx.pth'
temp = torch.load(weights)
...  
data = ... #type:OrderedDict
torch.save(data, 'new_model.pth', _use_new_zipfile_serialization=False)

About data The processing methods of models saved in different ways are not quite the same , Find out how your model is saved , For several common preservation forms, please refer to my blog ：
https://blog.csdn.net/qq_41368074/article/details/120812819
A specific example can be referred to ：
https://blog.csdn.net/flying_ant2018/article/details/115403774