For anyone with ipega or other controllers that haven't been pairing since 12.0.0, here are some patches I made that may enable them to work again. I've had confirmation that this works for the ipega controllers at least.
For people hanging out for Wii/WiiU support: while these patches are also necessary in your case, there are additional modifications that will need to be made before these controllers can be paired again. I'm still in the process of trying to figure out where everything goes wrong on the new firmware.
For people hanging out for Wii/WiiU support: while these patches are also necessary in your case, there are additional modifications that will need to be made before these controllers can be paired again. I'm still in the process of trying to figure out where everything goes wrong on the new firmware.