http://wccftech.com/ps4-firmware-5-0-error-code-e-801809a8/ >It appears that PS4 error code E-801809A8 is preventing people from installing the PS4 5.0 firmware update that was released yesterday. >While the majority of players are able to download and install the 5.0 software update without issues, numerous PS4 users have reported that they aren’t able to install the firmware update due to error code E-801809A8. The error code appears to be related to a faulty PS4 Blu-Ray drive which prevents the console from updating to PS4 system software 5.0.