ok i need help i updated the phone to the latest update.now stuck service mode

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http://forum.xda-developers.com – hi. so i think i need help. i updated the phone few days ago to the latest firmware. and the phoen was fine for the next 2 days. i never had to restart or anything. today one of my games wasnt working so i figured my phone might need a restart. anyway i did. and now my phone is stuck in some service mode i assume ? its a triangle with screw driver inside and a blue moving bar under it. i dont know what to do. my phone isnt rooted or anything. i didnt even attempt to root after the update. nothing. just restarting the phone :/ am i f**ked ? :/ (HowTos)