Not really. Database data and files are two different notes.
If you didn't do a back up of your database schemas prior to doing the update, then there is no reversal on this. You would need the SQL coding for your entire database available. Just backing up your files isn't enough. This is why whenever you do anything involving the database, it's a good idea to go to your hosting control panel and log into likely phpMyAdmin and do a complete backup of all your databases (even those not necessarily of ZenCart) before doing such work.
I would check with your host to see if they provide any automated back up and see if they a copy of your MySQL somewhere.
If you do a restore, there is a way to avoid losing your data. Restores normally involve doing a "IF THIS TABLE EXISTS, DELETE IT" sort of thing... So you may want to remove the CREATE TABLE coding. Secondly, any inserts should be changed from INSERT INTO to INSERT IGNORE INTO. This way you prevent duplicates. Doing this will tell MySQL to insert all of the data from the backup before you did MySQL ignoring any conflicts. This way you keep your current data and add your backup data.
This may sound a bit complicated but just remember before you begin... BACKUP EVERYTHING...
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