Hi there mary53,
Thanks for reaching out about your software updates. QuickBooks Desktop is a great tool able to help you keep track of sales and expenses so you know the profitability of your business. I can point you in the right direction for assistance with updates.
To see if an update to your QuickBooks Desktop software can be rolled back, I recommend reaching out to the QuickBooks Desktop support team outside of the Community. They'll be able to assist with getting you the software update needed so you can manage your books.. You can reach them using the methods outlined in the QuickBooks Desktop software support policies.
If you have any other questions, feel free to reach out here.