It s like a custom Bios (kinda)
For Nintendo it's impossible to patch Sighax via an Update !!!
and I think you have now a lot more Privilegs.
The Payload Size can be increased I think (on A9LH is a Limit of the Bin File and this is removed so Devs can now do bigger and more fancier Payloads..)
PS: Correct me if I am talking just ****