Please sir i have a problem about your browser's "about:config" page. In Firefox for Android i enable this following feature to do download with adm.

browser.download.forward_oma_android_download_manager When I enable this as true, all time if I download A new file it prompt me to download with adm or other installed Downloader. But in new Firefox (Firefox beta and nighty), after enabling this function it do not work. All time downloading file using browser default downloader. Please fix this problem sir and also help us to work and use mozzila products.