RouterBoard downgrade

Hi all,
I have a problem with Mikrotik 2.9.14 on RouterBoard 500.

I’m providing hotspot access to a university campus, and I would like to provide public IP address only after hotspot authentication succeeds. This was possible with 2.8 because users got temporary IP address before authentication from an IP pool (private in my case), and after authentication succeeeded they get an IP address from another IP pool (public in my case).
With 2.9 this is not possible any more, because only one IP pool is used.

I would like to go back to 2.8, but there is no 2.8 installation package for routerboard available on the web site to do the downgrade as descibed in http://www.mikrotik.com/docs/ros/2.9/guide/packages.

Does anybody have an idea where I can find 2.8 package for routerboard 500?

Best regards,
Carlo

RouterBOARD 500 ONLY works with 2.9 or newer.

You can use universal client feature instead of what you used before. see manual for more details

Thank you Normis,
I’ve already made configuration following guidelines reported in http://www.mikrotik.com/docs/ros/2.9/ip/hotspot, so Universal Client is already used. The problem is that universal client (one-to-one NAT) changes any IP address find on user’s client to a valid one from a selected IP pool, but this pool is made of public IP address, so users get public IP address also if they are not authenticated. What I need to do is to assign to not authenticated users private IP address and, only after authentication succeeds, provide a public IP address.
Universal client needs an IP pool to assign IP address to users that access the network, and a second pool (called next pool) is defined if addresses of the first one are finished.
What will appen if I disable one-to-one NAT?
Regards