I got the same problem using iPlus 2.0b and was able to fix it...
AT&T Users only!! Cannot connect to YouTube ??
It seems like it has to do with the iPlus activation, which is something AT&T users don't need since iTunes will activate it normally.
I restored to the stock 1.1.4, and let iTunes activate my iPhone. Then, I modified the iplus.bat file to remove activation; enable
jailbreak and unlock.
1. Use iTunes to restore your firmware to stock 1.1.4 and let iTunes activate your iPhone.
2. Download iPlus (
http://ipluspwns.com/)
3. Replace the following text in the iplus.bat batch file:
with:
4. Run the batch file. Jailbreak (and unlock) should begin automatically.