Si aún así tampoco funciona, pues intenta instalarlos desde ADB, como *.img -> Deberás cambiar el nombre del archivo a Recovery.img.
Puedes encontrar ambos en éste link:
http://clockworkmod.com/rommanager (Busca HTC Sensation).
Instrucciones para bootear a Custom Recovery desde pc sin instalación (tu tradúcelo con google translate) :
File format is { recovery name }.img
Download ADB tools download for WINDOWS
Put recovery img { recovery name }.img inside ADB folder in same place your fastboot.exe
{ recovery name }.img is the exact name for the downloaded recovery img that you put inside the ADB Folder
it is NOT PG58IMG.zip recovery
Start cmd as administrator and navigate to ADB Folder which includes fastboot.exe and type the command fastboot boot { recovery name }.img and press enter
your phone should now go to recovery screen ( loaded through fastboot )
