Original post by: mago0 ,
Hello. Try next steps (apologize for my english, i'm spanish :) ) Hold Volume down and home at same time. Then, plug in the usb cable, previously connected to computer. The device must go to download mode. Then, unpush both buttons, and press volume down to cancel and restar the device. Worked for me in Galaxy trend, Galaxy S2 and BQ. Good luck. Please, tell me if worked.