I think I can close even this new thread and my patience is reaching his own limit. Only one thing I'd like to say for a second time. OEM SLP Lenovo's key could be blacklisted but the only files needed for correct detection of legit keys are pkeyconfig.xrm-ms and tokens.dat so far. When users type slmgr.vbs -ipk syntax command and insert lenovo's key, they simply "interrogate" those files to match oem key inserted. That's all. At last (and I won't add any other word anymore), if M$ wants to add blacklist to such key it will update system files and activation files to put that key on M$ blacklist. I hope this is clear one time for ever.