Ja, most nézem, valószínűleg nem lesz 64 bites portable sajnos.
>Note that the 64-bit version below will not work on 32-bit Windows machines. PortableApps.com does not normally publish or recommend 64-bit-only portable apps as per our policies and recommendations on 64-bit portable apps. An exception is made specifically for testing of the 64-bit Firefox Nightly builds.
http://portableapps.com/apps/internet/firefox_portable/test
