Why not, just changing admin full name and password using LS interface ?
I'm not sure if the software will really like the lost of his superadmin. If you want to try this, you have to edit `lime_users` table via PhpMyAdmin or similar interface. Hope you really know what you are touching however there is no trouble if you backup this table or the full database previously.
Here
you will find a sample of `lime_users` table structure...
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