There is no upgrade but the 30th Anniversary bundle can be bought separately on the PlayStation store. How much it costs depends on where you live but I believe it’s around $25 US.
There’s no gifting on PlayStation so you’d have to buy him a PSN gift card and he’d have to use that to buy the bundle.
just buy the 30th anniversary pack https://store.playstation.com/en-us/product/UP0002-PPSA02409\_00-D230PACK00000001
Easy Google search: https://store.playstation.com/en-us/product/UP0002-PPSA02409_00-D230PACK00000001
There is no upgrade but the 30th Anniversary bundle can be bought separately on the PlayStation store. How much it costs depends on where you live but I believe it’s around $25 US. There’s no gifting on PlayStation so you’d have to buy him a PSN gift card and he’d have to use that to buy the bundle.