fwupdate.exe is a legitimate process that can also be called as LG Firmware Auto-update. You can see this file running in your task manager if it was pre-installed on your computer for updating the firmware that belongs to LG (it can be DVD-Writer, monitor or other program). If you want to avoid problems related to this, you shouldn't eliminate fwupdate.exe from your computer. However, it is not an essential system's component what means that you can terminate this file if you feel that it has been causing problems on your computer. It can be found in C:\Windows\System32 folder.
There are lots of legitimate files that have been involved to malicious activities. This is done for trying to hide their presence on the system and prevent their elimination. If you have noticed that fwupdate.exe is causing constant slow downs, redirects and similar issues, you should check the trustworthiness of this file because it might be related to malware. For that we recommend using RegCure Pro.