Can I delete a file called 'UPDATE' in the dload folder, or will this delete the operating system? I recently received low space warnings on my Huawei Honor so I connected my phone to the Mac and observed the files:



As you can see, perhaps 75% is taken up by a file called 'UPDATE' in the dload folder.  Can I delete this?  Is this an install file or is it the operating system?! 

Obviously I could answer my own question by deleting it but I don't want to delete the operating system.
This shouldn't delete the OS.  Looks to just be a small update file.