For the Cavalier you can use Jump-SPL or Hard-SPL.
First of all,use SDA-Applicationunlock,after that you can use Jump or Hard-SPL.
Note:Jump-SPL is temporary,you need to repeat it before flashing a new ROM.
Hard-SPL is permanent,you have to do it once,after that just flash any ROM you need.
PHP Code:
http://www.fishermangsm.com/Share4HTC/index.php?dir=Cavalier/
PHP Code:
http://www.4shared.com/dir/36590201/44773572/Cavalier.html
Mirror from subrata.mobi will be added later.
BR
Szig