Wifi problems HG633

I've been having lots of wifi problems and looking at the statistics page of the routers there are lots of errors and discarded packets.

I believe the router is at fault and have ready many threads that others are experiencing the issue.

http://community.talktalk.co.uk/t5/Superpowered-Fibre-Broadband/HG633-new-firmware-v1-16t/td-p/1823609 

I would like to receive the firmware upgrade to my router.