i bought a htc one from kijiji and it was running sense 5.5. then i bricked it and managed to get the google play edition rom to work on it. but i want to flas the stock sense 5.5 on it not the google play edition. the phone is s-on and it wont go into recovery mode, it simply has an android with a red triangle with an "!" mark. when i tried to unlock it, it said successful on the command prompt but no change on the phone. how can i flash the stock ruu that runs sense 5.5. any help would be appreciated.