i need help in pokemon platinum uith the city black out (i ha 7 badges not gartinia) plz

The black out in Sunnyshore? Have toi met Giratina? If toi haven't, just finish with the Distortion World and he should let toi through. (Sorry if this doesn't help, and if you've all ready done that and it doesn't work maybe your game has a glitch. I hate glitches.)

Well to get too Sunnyshore here is my advice

Go to Heartrome city (stock up on revives and hyper potions)(and go to the pokemon center)
Head towards Mt.Coronet
Go to the other end and surf across to a bit were toi can use rock climb go through complete this area and Looker will come and give toi a flute
head through and its the same as Diamond/Pearl to get there of toi don't have that I'll tell anyway)
toi go out of the cave and your at snow head towards another place for rock climb now don't go up the seconde one instead go left and go through the herbe to the suivant cave work your way through it then you'll be out in the snow again go down but don't go in the cave instead rock climb on the left and déplacer around and they're will be another cave work your way through then once toi get out 2 grunts will battle toi together and then ou and your rival battle Mars and Jupiter then the portal will appear for the Distortion World but toi need to talk too Cynthia and say yes and toi will mstly be guided par Cynthia,Azelf,Uxie and Mesprit andafter that you'll battle Cyrus then after battling him go on to catch Giratina then leave with Cynthia you'll be at Sendoff Spring either fly ou work your up and out then that man won't be there blocking toi and there toi are at Sunnyshore

Sorry if this is too long and not detailed enough