play ninja saga until lv 29, after it cleared all the firefox history.
close fiddler (if you use it), then close firefox.
play ninja saga manually (without any cheat) until you are lv 30.
now try to refresh. if you could go ninja saga means success.
then use the cheat again ....
* note: you must have at least 1 skill lv 21-29
I use this trick in all my dummy and it's works
click thank if this post helped you