easily updated to LION 10.7.4
I just need to replace (rollback) the AppleSMC.kext with the old one from 10.7.3






but I found these kinds of errors during booting in verbose mode:

In interface com.apple.kpi.private of __kernel__, couldn't find symbol _buf_attr

In interface com.apple.kpi.private of __kernel__, couldn't find symbol _bufattr_throttled