T. Kato found on August 21 that the real position seems to be slightly east to the DWS position by comparing the images (in outburst) and available charts (vsnet-campaign-dn 115). On August 22, Ouda team reported the revised superhump period of 0.0682 d, or its alias 0.0639 d and that there is an evidence of super-QPOs around every superhump minimum (vsnet-campaign 436). J. Pietz provided time-series data which confirms the presence of superhumps (vsnet-campaign-dn 117). H. Yamaoka performed astrometry using the images taken at Ouda and reported that the object observed by O'Conner (vsnet-obs 29250) is not the real V550 Cyg, and the position mentioned on (vsnet-campaign 435) is incorrect. And, the real V550 Cyg is about 3" east or east-southeast from the DWS position and the position of the candidate of V550 Cyg at quiescent (Skiff, 1999, IBVS 4675). Further, on the DSS2 Bj images, the faint object (19.5-20.0) lies on the neighbour of the position. The amplitude of this CV is therefore quite large, likely more than 5 magnitude (vsnet-campaign-dn 120, vsnet-campaign 447). The fading from the superoutburst was observed in the end of August. The observation by T. Kinnunen shows the magnitude on August 28 to be 16.2mag (vsnet-campaign-dn 129).