Please use download.mozilla.org to retrieve the latest Firefox release.

For example, if you wish to download the multilang APK the url is
   https://download.mozilla.org/?product=fennec-latest&os=android&lang=multi

This could be pasted into the location bar of a browser, or used with curl or wget,  e.g. 
wget -O Firefox.apk "https://download.mozilla.org/?product=fennec-latest&os=android&lang=multi"

For other operating systems replace 'os=android' with:
   Android API-9              os=android-api-9
   Android X86                os=android-x86

For other single locale APKs replace 'lang=multi' with:
   Acholi                     lang=ach
   Afrikaans                  lang=af
   Albanian                   lang=sq
   Arabic                     lang=ar
   Aragonese                  lang=an
   Armenian                   lang=hy-AM
   Assamese                   lang=as
   Asturian                   lang=ast
   Azerbaijani                lang=az
   Basque                     lang=eu
   Belarusian                 lang=be
   Bengali (Bangladesh)       lang=bn-BD
   Bengali (India)            lang=bn-IN
   Bosnian                    lang=bs
   Breton                     lang=br
   Bulgarian                  lang=bg
   Catalan                    lang=ca
   Chinese (Simplified)       lang=zh-CN
   Chinese (Traditional)      lang=zh-TW
   Croatian                   lang=hr
   Czech                      lang=cs
   Danish                     lang=da
   Dutch                      lang=nl
   English (British)          lang=en-GB
   English (South African)    lang=en-ZA
   Esperanto                  lang=eo
   Estonian                   lang=et
   Finnish                    lang=fi
   French                     lang=fr
   Frisian                    lang=fy-NL
   Fulah                      lang=ff
   Gaelic (Scotland)          lang=gd
   Galician                   lang=gl
   German                     lang=de
   Greek                      lang=el
   Gujarati (India)           lang=gu-IN
   Hebrew                     lang=he
   Hindi (India)              lang=hi-IN
   Hungarian                  lang=hu
   Icelandic                  lang=is
   Indonesian                 lang=id
   Irish                      lang=ga-IE
   Italian                    lang=it
   Kannada                    lang=kn
   Kazakh                     lang=kk
   Khmer                      lang=km
   Korean                     lang=ko
   Latvian                    lang=lv
   Ligurian                   lang=lij
   Lithuanian                 lang=lt
   Lower Sorbian              lang=dsb
   Macedonian                 lang=mk
   Maithili                   lang=mai
   Malay                      lang=ms
   Malayalam                  lang=ml
   Marathi                    lang=mr
   Norwegian (Bokmål)        lang=nb-NO
   Norwegian (Nynorsk)        lang=nn-NO
   Oriya                      lang=or
   Persian                    lang=fa
   Polish                     lang=pl
   Portuguese (Brazilian)     lang=pt-BR
   Portuguese (Portugal)      lang=pt-PT
   Punjabi (India)            lang=pa-IN
   Romanian                   lang=ro
   Romansh                    lang=rm
   Russian                    lang=ru
   Serbian                    lang=sr
   Sinhala                    lang=si
   Slovak                     lang=sk
   Slovenian                  lang=sl
   Songhai                    lang=son
   Spanish (Argentina)        lang=es-AR
   Spanish (Chile)            lang=es-CL
   Spanish (Mexico)           lang=es-MX
   Spanish (Spain)            lang=es-ES
   Swedish                    lang=sv-SE
   Tamil                      lang=ta
   Telugu                     lang=te
   Thai                       lang=th
   Turkish                    lang=tr
   Ukrainian                  lang=uk
   Upper Sorbian              lang=hsb
   Uzbek                      lang=uz
   Vietnamese                 lang=vi
   Welsh                      lang=cy
   Xhosa                      lang=xh


Mozilla Release Engineering
Email: release-engineering@lists.mozilla.org
Web:   https://groups.google.com/forum/#!forum/mozilla.release.engineering