Amiko STB's have CONAX card readers, but using alternative firmware(s) will allow it to emulate other card readers (e.g. IRDETO, cryptoworks etc).
However this is no longer possible with the new Skylink M7 cards which have enhanced security (I've had a few friends in Slovakia with this problem when they've had to change to newer cards).
The only solution is to buy a Skylink CAM for your Amiko or an official Skylink STB. I doubt any future firmware will fix the problem as it's a hardware issue.
I have an older ICE card in my Amiko and made sure I paid my subscription well up front to ensure it didn't expire or I would've had have to buy a new card and a Skylink CAM for my Amiko SHD-8360.
I hope this helps