Just in case the "Update Unlockbase database" does not work on your server, you can use this alternative way to upgrade the unlockbase database.
However there are a few drawbacks of doing it.
1. You might lose your custom pricing.
2. The prices shown in the service manager might be different from the prices you are actually being charged by unlockbase, but this is normal, as the prices shown in service manager are for reference only and when an order is placed you will be charged the same prices as per your unlockbase.com account.
Note : Backup your current database before you do this procedure.
If you do this procedure then do not use the option "Update Unlockbase Database".
Download the manual from here.
Download the unlockbase database file : last updated on 07-April-2010 from here.