diff --git a/linux-firmware.spec b/linux-firmware.spec
index 50f23cf..823fdcd 100644
--- a/linux-firmware.spec
+++ b/linux-firmware.spec
@@ -1,6 +1,6 @@
 Name:          linux-firmware
 Version:       20210719
-Release:       1mamba
+Release:       2mamba
 Summary:       Collection of firmware files used by the Linux Kernel
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -13,18 +13,18 @@ License:       Distributable
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
 Provides:      iwlwifi-firmware
-Obsoletes:     iwlwifi-firmware
+Obsoletes:     iwlwifi-firmware < 20210719
 Provides:      rt2860-firmware
-Obsoletes:     rt2860-firmware
+Obsoletes:     rt2860-firmware < 20210719
 Provides:      rt2870-firmware
-Obsoletes:     rt2870-firmware
+Obsoletes:     rt2870-firmware < 20210719
 Provides:      radeon-firmware
-Obsoletes:     radeon-firmware
+Obsoletes:     radeon-firmware < 20210719
 Provides:      rt2501-firmware
-Obsoletes:     rt2501-firmware
+Obsoletes:     rt2501-firmware < 20210719
 Provides:      linux_firmware
 Provides:      linux-firmware-extra
-Obsoletes:     linux-firmware-extra
+Obsoletes:     linux-firmware-extra < 20210719
 
 %description
 Collection of firmware files used by the Linux Kernel.
@@ -37,17 +37,40 @@ Collection of firmware files used by the Linux Kernel.
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall
+%makeinstall \
+   FIRMWAREDIR=%{_prefix}/lib/firmware
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
+%pre
+if [ ! -L /lib -a ! -L /lib/firmware ]; then
+   # Migrate /lib/firmware to /usr/lib/firmware
+   [ -e /usr/lib/firmware ] && mv /usr/lib/firmware{,.rpmold}
+   mv /lib/firmware /usr/lib/firmware
+   if [ -e /usr/lib/firmware.rpmold ]; then
+      mv /usr/lib/firmware.rpmold/* /usr/lib/firmware/ || true
+      rmdir /usr/lib/firmware.rpmold || true
+   fi
+fi
+:
+
+%posttrans
+if [ ! -L /lib -a ! -e /lib/firmware ]; then
+   # make /lib/firmware symlink to /usr/lib/firmware
+   ln -s ../usr/lib/firmware /lib/firmware
+fi
+:
+
 %files
 %defattr(-,root,root)
-%dir /lib/firmware
-/lib/firmware/*
+%dir %{_prefix}/lib/firmware
+%{_prefix}/lib/firmware/*
 
 %changelog
+* Tue Aug 10 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 20210719-2mamba
+- migrate from /lib/firmware to /usr/lib/firmware and add /lib/firmware symlink
+
 * Tue Jul 20 2021 Automatic Build System <autodist@mambasoft.it> 20210719-1mamba
 - automatic version update by autodist