For SLE 15 SP6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_15_SP6/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 15 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_15_SP5/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 15 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_15_SP4/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 15 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_15_SP3/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 15 SP2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_15_SP2/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 12 SP5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_12_SP5/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mkubecek:firebird25/SLE_12_SP3/home:mkubecek:firebird25.repo
zypper refresh
zypper install firebird