Hello,
it has been a while. but I have discovered something interesting.
if i downgrade the dir-855l verA1 to the firmware 1.00 then I can secure the user account with a password, and when i update the firmware to 1.03 the user account is secured with the old password, but i have no ability to change it.
however, if i do not secure the user account with the password, and upgrade to latest version there is no way to change the password, and the user can be selected from dropdown and anyone can simply login with no password, view logs, see connected devices, IP's and MAC address, etc.,
this is a minor bug, but is quite a nuisance if you have guest WLAN.
also noticed that the WISH is not available in web interface and can only be reached via known web address.
as a personal note, run release 1.0 it is much better.