When error code SU-42118-6 pops up on consoles, in most cases it makes you stuck in a restart loop.
This error is caused by a broken ribbon connector between the motherboard and the BD-ROM. This often happens after self-cleaning the console, when you are using the wrong PS4 hardware. As a result, the system will not be able to communicate with the BD-ROM. In this case, you need to check the BD-ROM tape connection between the drive and the motherboard, as well as look for broken tabs and replace broken console components if necessary.
Often replacing the hard drive of the PS4 console helps stop users from error code SU-42118-6. If the problem reappears after doing this, you can try to update the console on the replaced hard drive.
这是说，我PS4的光驱桥接器坏了？近段时间也没磕碰过，一更新就报错循环呢
