Ps4 disk update file is not working?

I just wanted to set up a new hard drive on my PS4. I did everything as I should. (USB stick formatted with exFat / 32Fat, "PS4" folder and therein an "UPDATE" folder with the file PS4UPDATE.PUP) the device also finds the file as normal, but says it is the wrong or: "The update File can't be used Connect a USB storage device that contains an update file for reinstallation 6.50 or later. (CE-34788-0) "Have the update file 6.50 (the most recent of the page). Then I gave up on it because I thought it was simply on the hard drive, and screwed back my old hard drive. Here I have the same problem again. Would anyone have the same problems or is familiar in this area and can help me? I'm really desperate and am afraid that the PS4 is now in principle scrap.

I suspect that you downloaded the wrong file. It's a bit hard to find on the PlayStation site. If the problem persists, please contact me.