Engineering mode problem in my Lenovo A3000-H

Hi, I recently flashed CM11 on my A3000H and everything was great. Thanks to Oliver. But then, I erased my IMEI number in that process. I have the number and I want to write it to my tablet, but I am not able to access the engineering mode; MobileUncle Tools just goes back to the previous screen, and the MTK Engineering mode app gives me a "Cannot find Engineering Mode app" message. I am not even able to add a google account on my tablet. Please help me as soon as possible. Thanks in advance.