Support Unroot, sending back to VM No custom rom

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http://androidforums.com – So I rooted my phone, but did not flash the rom (seemed too complicated at the time) All I did was install gingerbreak and link to sd, only rooted to expand the internal memory for apps. I have to send the phone back for bluetooth reasons. Do I just unroot using gingerbreak? After I unroot, and uninstall gingerbreak can I use the factory reset option now? q (General)