Console buttons don't work

Hy everybody
I've installed HBC and everything goes well, but i can't start bootmii because the console buttons (shutoff ,reset, eject) have mainteined his original functions.
What i can do ??
Thnx on first

I am guessing you have it installed as IOS? In which case, you need to use a cube controller.

yes,boot2 isn't possible, but i can't found a cube controller.
Do you think that a downgrade of firmware can make me possible to install in boot2 ?

No. Not being able to install Boot2 is caused by updated hardware.

You can't install boot2 because boot1 prevents it. Downgrading this boot1 would lead to an un-fixable brick. This is because boot0 checks a hash in boot1. Downgrading boot1 would change the hash thus boot0 would not let boot1 start.
The start procces goes OTP (one time programable) boot0 boot1 boot2 (where bootmii resides). Therefore you cannot do anything to get back the old boot1. Sorry!

In short: No a firmware change will not let you install boot2

Ok, thnx everybody.
Just a last crazy thing.
i would try to adapt a psone controller, someone know the function of the pin of the gamecube port ??

There are a handful of pins in the gamecube controller ports...

I'd say you'd be much easier to nip down to your local game/gamestation/eb games/whatever there is where you live and buy a GC controller.