DFU not found

DFU not foundhttps://devzone.nordicsemi.com/f/nordic-q-a/32863/dfu-not-foundHi, we are using 'iOSDFULibrary' , '~> 3.0' for firmware updation process. we are getting "DFU not found" error when device is already in dfu mode at the time of update firmware with that. we checked DFULibrary. we found that you are checking deviceen-USTelligent Community 13Thu, 05 Apr 2018 11:57:57 GMTRE: DFU not foundhttps://devzone.nordicsemi.com/thread/127018?ContentTypeID=1Thu, 05 Apr 2018 11:57:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5bff710b-5212-4f02-a624-d842b152f673Bjørn Kvaale<p>Did you change the service UUID in DFULibrary Services to your DFU UUID or did you change your DFU UUID to the DFULibrary Services UUID? Are you using nrf toolbox for iOS? If so, you might want to create an issue in the <a href="https://github.com/NordicSemiconductor/IOS-nRF-Toolbox/issues" target="_blank" rel="noopener noreferrer">nrf toolbox github page</a>.</p><div style="clear:both;"></div>