Originally Posted by hortstu
Just to make sure I'm following you, are you saying if best buy does the update I'll have problems rooting so I should do it myself when I root? T thanks.
The update will not hamper rooting in any way
. I'm just saying as a courtesy, some Best Buy stores will let you update the phone before you leave. Regardless of where you get the phone, let it update first and then perform a factory reset before you start setting up your phone. (Settings -> Accounts -> Backup and Rest)
Samsung Galaxy S® 4 MJA Rooted with CF Auto-Root Tutorial
HTC EVO Design 4G™ v4.0.3 Bootloader Unlocked & Rooted with HTC SuperTool v3
If it ain't broke, use a sledge hammer.