How do I remove Grohe shower handle?

[jayre]

Grohe A112.18.1
B125
0708-03
I need to clean out the cartridge. How do I remove the handle? I don't see any hole or screw.

 

[Breplum]

Grohe Talia handles always attach by screwing so, unscrew. They screwed on easy when new. ha ha
The service stops are the big round parts and below them are non-return valve and screens so, I doubt you'd find any fouling of the paraffin cartridge itself.
Valve rough-in is 34122000

 

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[jayre]

Here are the photos after I took the dome cover off. I tried unscrewing but it just keeps turning.
I'v done this before a few years back. It was easy to get to the cartridge that was filled with debris that I cleared out. I just can't remember how I did.