Team Typhoon, the creators of the ChickHEN exploit that has allowed PSP 3000 to use custom firmware, have manged to get their HEN exploit working on the new PSP Go!
They have released a show-off video proving that it works BUT they are not going to release it for unknown reasons.
Here are the developers notes that were released along with the video:
This video is for bragging rights ONLY (since it’s very cool nowadays) and shows our Proof of Concept 6.10 Custom Firmware running on the PSPgo. This will never be released to the general public or anyone else at all whether you are a dev or not, this is Team Typhoon internal material, we have no reason whatsoever to waste a perfectly good exploit. So don’t ask for release dates. We don’t care about your complaining, whining and everything remotely related and it’s your own damn fault since you brought this on yourselves. Better version of the video showcasing more homebrew coming next week. Thanks go to Sony for this awesome piece of new hardware, finally a decent hardware revision. Also thanks to all historied PSP Homebrew developers for paving the way for us to be able to do this.