Samsung wouldn't be update those fonts
but if you want then
Read first comments on this link on members app
https://r2.community.samsung.com/t5/Galaxy-A/FONT/td-p/5517740
And if you don't want to do so to get those fonts then you can use other fonts in zfont app
download "zfont" app from playstore
just check this out
https://play.google.com/store/apps/details?id=com.mgngoe.zfont
see image just open after download and in homepage you will get one ui supported fonts
but if you want then
Read first comments on this link on members app
https://r2.community.samsung.com/t5/Galaxy-A/FONT/td-p/5517740
And if you don't want to do so to get those fonts then you can use other fonts in zfont app
download "zfont" app from playstore
just check this out
https://play.google.com/store/apps/details?id=com.mgngoe.zfont
see image just open after download and in homepage you will get one ui supported fonts
