OK .. problems
1. my router is not the US version and it still upgraded to 1.30; https://eu.dlink.com/ro/ro/products/dir-882-exo-ac2600-mumimo-wifi-router#support still 1.20 - I disabled auto-upgrading and it still prompts me to 1.30 ... ain't gonna happen !!!!!!
2. the problems I described here http://forums.dlink.com/index.php?topic=75413.0 are still present
3. after I did a factory reset, my ISP credentials would no longer work; I had to get back on 1.20 FW to restore my internet connection
1.30 has some major issues, at least for me