I do not take credit for this browser i did not develop it credits should go straight to mozilla for delivering there browser to armv6 devices.
The firefox alpha browser is not compatible with all of the current plugins available for the stable firefox browser that is already available on the market. Compatibility checking is based on the version number. After playing around with this browser while its still in alpha i find it to be quite stable and good for daily use.
Here's the OFFICIAL Mozilla file at Bugzilla for getting official support for ARMv6 devices.