THIS TUTORIAL IS MADE BY MY OWN AND OWN EXPERIENCE NOT A SITE TUTORIAL AND IT WORKED FOR ME.(DISCOVERED SOLUTION BY PURE HAZARD LOL).
SO THE STEPS GIVEN BELOW WILL GUIDE YOU/.
01- install liquide drivers : acer liquide drivers
http://www.megaupload.com/?d=E5PTHL3O
http://code.google.com/p/acer-liquid-malez-recovery/wiki/howToInstall
02- go to acer support site and download the latest liquide update.(.exe file) not bin or img.
03- for unlock download this file http://www.mcboydesign.fr/media/acer.../amss_mode.zip
04- install the liquide update to your pc without updating the phone.not yet.be patient.
05- youll find a file called desimlock.xml inside the amss mode.zip folder copy it and past it into the c:qcn