PS4 update 4.70 is giving some users serious trouble, according to multiple accounts across Reddit and Sony's support forums. The update went live earlier today and since then many users have reported locked-up consoles stuck on the main menu screen, though many have been able to get it working again after some effort.
There doesn't seem to be a consistent hardware element to the issue; users on PS4 Pros as well as original PS4s have reported problems, while others updated just fine. Assuming your console hasn't already downloaded update 4.70, you may want to hold off until Sony publicly addresses this issue.
Here are some potential solutions users have posted in case you're already staring at a frozen screen - your mileage may vary, of course. Troubleshoot at your own risk.
- "Same thing happened to me this morning. Turn off your ps4 by holding the power button. Boot to safe mode by holding the power button until you hear two beeps. While in safe mode, restore storage, restart, boot back to safe mode, then install the update (use the from internet option) from there. Fixed the issue and working as usual. Hope that helps someone." - Greavar
- "Fixed it by booting in Safe Mode with the LAN cable unplugged (turn off router if you're using WiFi). Then Rebuild Database and it should work fine after. It's safe to connect to internet and update then." - TheEmqeror
- "Disconnected external hard drive Started in safe mode (then it wouldn't pick up my controller, so turned it off) Restarted x 2 after only getting to the blue screen Got to main menu, reconnected the external hard drive, let it repair it Restarted again, this time it let me connect to the playstation network and download the update" - I_LikeDots