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Old 08-22-2007, 11:56 AM   #4 (permalink)
BlackBerry Mensa
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Join Date: Jan 2005
Location: Houston
Model: 8310
Carrier: at&t
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Service books configure the device so the BB itself and the OS on it don't matter. If you want to be safe then delete the service books before inserting the at&t SIM and powering up. Generally, the service books are pushed without any problems but there are plenty of posts here that are service book-related issues...