Unrooting without an SD card

vancegames

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Mar 10, 2013
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Afternoon everyone, real quick question about unrooting, and please excuse the noob level here;

I dont seem to see any way to unroot my old thunderbolt without an SD card, not sure where it went, but I would like to allow my wife to use this phone since she lost hers, and every time it connects to the Verizon network it tries to update itself and crashes, and does this constantly. I am sure it is because the phone is rooted, and I dont need root access, but for the life of me I cant seem to find a method to unroot without a micro SD ( That I somehow managed to lose ). Should I just run to walmart or whatever and pick one up? Or is there a method I haven't found yet?

Thanks in Advance.
 

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