Dont have a windows pc bootloader help req

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http://forum.xda-developers.com – Hi all First time post so, sorry if I **** it up I am trying to upgrade my A500 from HC, to ICS its on version, 3.01 and a HC boot loader , I have managed to boot into Team Win Project v2,1.3, but on a reboot it get stuck on the acer boot screen , so I need to install a ICS bootloader but I only have a linux ubuntu machine ( ubuntu 12.04) using wine the bootloader .exe will open but I cant type anything So , IS there a linux version , or a way of doing the bootloader. I kind of understrand but Im not to sure any help about anything would be greatfully received Kind r (HowTos)