My z10 randomly restarts on its own and easily takes fifteen minutes to restart.software updates have not helped.my device is about a three months from date of purchase brand new.i would like to know how to reinstall the os not updating
Thank you
You can't return to an older OS version.
Security wipe deletes all data and brings up the phone to factory settings but with latest to the phone installed OS.
If you want all done with a specific OS version, search the Autoloader of your device in the whished OS version.
Search the forums for the keywords you need.
Workhorse: BlackBerry|Q10, SQN100-3, OS 10.3.2.2639; Power Workhorse: BlackBerry|Passport, SQW100-1, OS 10.3.2.2639 ; Germany.