Hello, I bought a new microtik hap ac lite (RB952Ui-5ac2nD), it came with version 6.30.4.
I reflashed it with netinstall to the latest version (6.34.3) and the second wlan interface disappeared.

How do I get it back?

I tried to reflash back to 6.30.4, but netstall complained that the board does not support this version.

Thank you in advance.

What wireless package are you using? If you are on wireless-fp change it to wireless-cm2. On mine i have wlan2 only with cm2

u need install the right wireless package?
and wondering why u not prefer to upgrade it through winbox interface than netinstall it

What wireless package are you using? If you are on wireless-fp change it to wireless-cm2. On mine i have wlan2 only with cm2

Yep, that was it. Thank you very much, really appreciate your help.

and wondering why u not prefer to upgrade it through winbox interface than netinstall it

Well, I'd never done that before, so I figured I'd learn how to do this in case I need it later.