The download page is at the  link below (be sure to choose the correct product).  You will need the product and license numbers you received when you purchased it in order to register.

http://support.quickbooks.intuit.com/Support/ProductUpdates.aspx?lid=UpdateDownloads

Resolution for '2017 update issue: 'download witll not give option of 2017 update' available: Yes.

The 2017 update issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 2017 update issue yourself by looking for a resolution described in the article. If it is a complex 2017 update issue or you are unable to solve the issue, you may contact us by clicking here or by using other 2017 update support options.

For more information about resolving issues related to 2017 update in Quickbooks/QBO or to get support for the issue 'download witll not give option of 2017 update', click the link below: