i have done the phone related apk's mod and now the youtube app is not working i followed the tip below that I found on another forum - but it was not worked.
You do not need to uninstall YouTube. It is crashing because it is still linked to your gmail account, as a hack to get all of the other Google apps working. If you disassociate YouTube from your gmail account, YouTube will once again work!
From the Market, download Titanium Backup (Free in the Market)... You may already have it installed, if so, skip this part.
Open up Titanium Backup, it will likely ask for Superuser permissions. Grant it.
If you get a Busybox error, install Busybox from the Market.
Click on the second tab at the top of Titanium, named 'Backup/Restore', and let it populate all of your apps
Scroll to the bottom of the list and tap the YouTube app
You'll get a dialog box. Click on the 'Wipe Data' button
Just close Titanium Backup, and you're done. YouTube will work, now that you cleared your user data.
any ideas?