Remote flash update

HI,

I am working on a project involving Arria V device and I need to have remote flash upgradable module.

Configuration data would be coming on RS-485 lines and i need to download this data on to flash.

Is there any ref design where I can evaluate the remote flash upgrade and make necessary changes custom to my requirements?

I went through application note AN603, but I couldnt find the links for the reference design.

Also application note doesnt mention of Arria V device for the reference design.

Please help.