My newly bought BB 8320 is displaying 'app 523 error', and from all advices i have being getting it shows that i have to upgrade the operating system by download the operating system software. I have tried alot to download but all to no avail and this is giving me headache and unwarranted sleepless night. My plead to u people is that if anybody hv this software at his/her disposal pls by God i beg you, help me by send it to my email : isaiah_tolu@yahoo.com. Your good gesture is needed because the phone is making me sad. Thanks to everyone.