Unsolved problem updating iphone 4 for ios 5

[DayDays Tech]

i got a iphone 4 Verizon 4.2.10 that is jailbrokin. i wanna update it to ios 5 but i get this erroe

the iphone isn't eligible for the requested build ios 5

how can i fix this?

i did update the itunes to 10.5

 

[John Marston]

Might be because your iPhone doesn't have something that's required for the iOS 5 update.Not sure though.

 

[DayDays Tech]

nvm i got it fixed. restart iphone and computer to get it working for those who have the same problem.