Thanks a lot @Jack Yaz ! I've read it more carefully now and have found the same Note you've pasted. And what is more important it seems reindexing have completed and I have access to the Web UI now.
Yes, it was from 384. If you refer to the "Changelog-NG.txt" in the zip - I think I did :) But it could be the case I missed some important info from >1500 lines of text :)
Hello SNB forum,
I've tried upgrading my Asus RT-AC88U with the latest RT-AC88U_386.2_4.trx.
It seems everything went OK but now I'm not able to log-in to http://router.asus.com/Main_Login.asp anymore. Actually the screens just gets unresponsive when I enter my credentials.
I cannot login...