How do I unlock an S5, after trying to use the device manager several times and nothing is working?

[AC Question]

how to unlock a s5,after trying to use the device manager several times and nothing is working

I've used several passwords and it still say,backup password is incorrect.

 

[Rukbat]

ADM takes a while to send the new password to the phone. Then that's the one it uses. If you send a different one, it may or may not go through. So try using the first one you set.

At worst, you'll have to restart into recovery and do a factory reset.