My phone stuck on safemode!

Today i was stupid , i was tried to change my mac address from "Console" which i download it from "Cydia" after open Console i write the following :

#SU

1. nvroom wifiadress=********

(***** mean some mac address "laptop mac address")

then after restart my iphone i found that it ask me to active my phone !!

this isn't my problem as i can finally activate it, but it stuck on safeMode !!!!!!!(and wifi works good)

trying to restart it several times and the same thing safemode again :(

i know i'm stupid but now i need help to fix this $@$* :''(