Root HTC DHD verifying signature failed installation aborted!

[khayrou]

hello when i was trying to root my HTC DHD with aahk-07052012 (hack-ace.cmd), and after complete rooting my HTC reboot and stay at welcome screen (white screen with HTC written). i tried to flash it with android revolution hd rom ( i reboot my htc by removing the battery and i used volume down key +power key ) i selected recovery ; a yellow message displayed " can't open/cache/recovery/command and
android system recovery<3e>
rebbot system now
apply sdcard:update .zip
wipe data/factory reset
wipe cache partition

i selected apply sdcard update and after it seems like it find the rom and (verifying update package ) suddenly E:signature verification failed Installation aborted.
i tried with another rom and the other options (wipe data factory reset /wipe cache partition)the same result .

can you heeeeeeeeeeelp me please ! thanks

 

[khayrou]

i solve the problem with myself
i downloaded PD98IMG that i detect his name is displayed on recovery screen
i put it into my sdcard with his original name and i have started my phone (recovery) it detect this file and the rom is installed