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bluehash in How to reset EK-LMF120XL Stellaris Launchpad?
Problem solved, thanks 2 igor.
Solution: erase the flash memory using LMFlashProgrammer and reprogram device using again LMFlashProgrammer
http://processors.wiki.ti.com/index.php/Stellaris_LM4F120_LaunchPad_Blink_the_RGB - project 0
by "does not reset default setting", I thought since it is a debug board basically it might store the default settings since something goes wrong and you would like to restore initial condition