This is the solution for Condor XC Mini with error internal error 1(-2)
Plug back into it and update it again. Then turn it off and unplug everything. It may take you a couple of tries but eventually it will restore. Sometimes it will takes you several hours to get everything back.
Click on the “fix it” icon at the top and you need to go through ALL of those as well.
or try to clear all
Thanks to Brandon Ledford at https://www.facebook.com/groups/xhorsetools/