My PS$ recently got stuck into safe mode. When I turn on my PS4 it sends me straight to send mode and then tells me that I have to insert a USB with an update file of 1.5.2 or later. I inserted a USB with the update file and the correct folder names but when I insert the USB it tells me that the update file cannot be used. I have tried disconnecting the power cord after turning off the PS4 but nothing is working. Please Help.
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I would bet that you are trying to use the update file (about 300mb) and the PS4 wants the System Software file that also contains the update, which is about 800mb. That file can be found here...
I have having this same exact problem, but I'm on firmware 1.52 and there is no 800mb system file that I can find only the 300mb one from there website. When I use the file from there site the PS4 wont accept it, it says it isnt vaild. HELP