I have done this.
It's not easy.
I can't remember the exact order, but you have to remove the trim pieces, including the false wood.
The main problem is the area around the steering wheel, which also has to come off. It's very tight.
Rather than do it yourself, and possibly break something, you may want to take it to an auto radio shop, and let them show you how (and be responsible for any breakage). It shouldn't take them more than a few minutes, so it won't cost much. Once the trim is off, it's easy to install the radio, and then put back the trim in the reverse order.