From
here. I remember doing this when I was using M2d and I'm pretty sure that it works. Just be sure to install to My Storage.
Ok I got it working guys.
1. Navigate to:
HKEY_LOCAL_MACHINE/Software/Google/YouTube
double click on "install path" and copy / write down the ENTIRE location of the official youtube installation .exe.
2. Navigate to:
HKEY_LOCAL_MACHINE/Software/Htc/Manilla2d/InternetWidget/Customized/0/CustomizedURL
and double click on "customizedURL" and input the location you copied above. mine reads (this might be different for you depending on where you isntalled it):
\My Storage\Program Files\YouTube\youtube.exe
3. Softreset
4. Go to internet tab and clicky the youtube and enjoy