OpManager Upgradation from Build 8811 to 9011

OpManager Upgradation from Build 8811 to 9011

I have OpManager Build 8811 and want to upgrade to 9011,

I have downloaded file "AdventNet_ManageEngine_OpManager_9_0_SP-0_1_1.ppm" from the site as suggested in upgradation process.

while i chose the file for upgradation, got this error.

what to do ?

                  New to ADSelfService Plus?