You just replace the files with the original ones, if you know how to do it with XS++ (3.1) or Far Manager.
Path is: Ifs » settings » acoustic
Otherwise you can zip them to apply it the same way you did before with the SEtool2 lite ( put zip file on misc. and hit flash)
I have original files for w700, k750, w800, w810 if you need them
.





