customize mii is not able to build a forwarder for the new HBC cuz of it's unique title ID, u can download this one here:
http://www.mediafire...v54mlp2p5fp48m8
if you want just the forwarder dol (to inject in another channel or to use with priiloader) use customize mii or showmiiwads or another tool to extract the dol from the channel.
To change the startup IOS of your channel, u can just change the IOS number in customize me. But I recommend using this forwarder code instead
http://gbatemp.net/t...etaxml-support/
Instead of having to compile the above forwarder code manually, you can use ModMii to do it for you. From ModMii's main menu enter "A" then "F", then follow the prompts until ModMii builds your custom forwarder dol. It will launch using IOS58 by default, but since it has meta.xml support, you can add an IOS reload argument to your apps meta.xml so it reloads to IOS248 (or 249 or w/e) immediately. Oh yea, I just realized, your current forwarder may work if u change your usb-loader settings using the configurator for configurable usb-loader to change the default IOS used.
Lastly, I think you should be asking yourself why u have a stubbed IOS249 and fix the root of your problem by resoftmodding using one of the stickied guides.