This thread has some links that might be useful: [https://support.mozilla.org/questions/973897 how can i install firefox os in my s3?]

sorry but this didn't help :(

LehKeda, Doing a quick Google search yields no results. It seems that Firefox OS is not available for your device (samsung galaxy star gt-s5282). As jscher2000 linked to [/questions/973897], the [https://developer.mozilla.org/en-US/docs/Mozilla/Firefox_OS/Building_and_installing_Firefox_OS Building and installing Firefox OS] link can help you build and run your own Firefox OS build but we cannot help you with porting over Firefox OS. Quick Disclaimer: Neither me or anyone on this site is responsible for damage to your phone if you try the steps above.