Sorry, no. No version of QB is backward compatible. You can open a file with a newer version, but then it can no longer be opened with the older version.
Resolution for '2015 file issue: 'Please tell, is possible to open the QB Pro 2015 file in QB Pro 2014?' available: Yes.
The 2015 file 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 2015 file issue yourself by looking for a resolution described in the article. If it is a complex 2015 file issue or you are unable to solve the issue, you may contact us by clicking here or by using other 2015 file support options.
For more information about resolving issues related to 2015 file in Quickbooks/QBO or to get support for the issue 'Please tell, is possible to open the QB Pro 2015 file in QB Pro 2014?', click the link below: