I9195L & I9195 error topic

Hi members

I have an I9195L mobile and I am trying to change the firmware to I9195 so that I can root it and unlock the sim - using this thread - http://forum.xda-developers.com/show....php?t=2558384.

Unfortunately, it gave me an error that shows " Secure Check Fail! : sbl 1 " . What could be the reason and how can I solve this problem and then load the new firmware?

Thanks in advance