Notes about the OBK file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The OBK file type is primarily associated with 'Oxygen Phone Manager' by Oxygen Software. Oxygen Phone Manager II for Nokia phones provides a to connect your phone with your PC. The software supports more than 110 models and gives an access to the major functions of your phone.