It's annoying reading so many posts about downgrading the current kernel, but we should never say something is impossible. It could happen one day or maybe a different exploit to hack kernel 8955.....be patient!

The thing is that it is impossible to downgrade due to the way Microsoft secured the console.
The only way updated consoles might have any hope is if they discover a new hole that can be exploited. But remember the current exploit is the only one discovered to date and it took 3 years to be able to able to really make mass use of it.