Erasing All Content on BB 6.15

i'm glad did little research before clicking erase content button under settings!

i've looked thread on how erase content on jb phone, i've found how fix phone after improperly erasing. have 3gs on ios 4.1 , bb 6.15. how erase content out having restore custom ios?

thanks,
david

 

a restore way erase content on jailbroken iphone.

 

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