Dvr responding slowly not for s/w issue.Technician told me that dvr respond slowly when hard disk get corrupt.So it's not s/w issue,it's H/w issue.So,S/w update is not the solution to resolve this issue.Same thing will happen after S/w update.I think tata sky need to use advanced HDD for dvr stbs.Can anyone knows which brand of hard disk tata sky using?