R6220固件升级找不到文件

English please. 

Netgear has set up a community forum specifically for Smart WiFi Router products. Most of the people who watch that forum are more likely to have experience with General and Smart Wifi (WN and R6000 thru R6400 Series) routers. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/General-WiFi-Routers-Non/bd-p/home-wifi-routers-general

Please use this link to the main forum product list to review and choose where to make your posts. 
https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear

Thank you