MozillaFirefox from home:olh:SLE_12 project
Select Your Operating System
Add repository and install manually
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:olh:SLE_12/SLE_12_SP3/home:olh:SLE_12.repo zypper refresh zypper install MozillaFirefox