Undo SQL UPDATE Azure DB
I have accidentally updated over 3,000 records in one of my tables hosted on Azure. 


You are out of luck (since you do not have any backups).

Also, it is not possible to use the undocumented command fn_dblog in Azure. It is only supported in SQL Server.

Also Transaction logs are no longer managed by the DBA in SQL Azure; this is automatically managed by SQL Azure's infrastructure.

check out : Supported Transact-SQL Statements (Azure SQL Database)