My developemnet option doesn't work, if I click on it, nothing happens. I tried it with 4.0.4 Stock and MCL, which was installed after a downgrade from 4.1.1. It looks like the device isn't rooted anymore too after I installed the Stock-ROM. So what can I do to get USB-debugging work, if I cannot activate it in the menu. A reset would be ok, no problem if all data is erased.