diff --git a/alsa-sof-firmware.spec b/alsa-sof-firmware.spec
index 3c739ad..6873507 100644
--- a/alsa-sof-firmware.spec
+++ b/alsa-sof-firmware.spec
@@ -1,6 +1,6 @@
-%global sof_commit 72a04d57d04c2df6e9dbf4eba0a98f40c252ee0b
+#%global sof_commit 72a04d57d04c2df6e9dbf4eba0a98f40c252ee0b
 Name:          alsa-sof-firmware
-Version:       1.4.2
+Version:       1.6
 Release:       1mamba
 Summary:       Firmware and topology files for Sound Open Firmware project
 Group:         System/Kernel and Hardware
@@ -8,7 +8,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://github.com/thesofproject/sof-bin
-Source:        https://github.com/thesofproject/sof-bin.git/stable-v%{version}@%{sof_commit}/sof-bin-%{version}.tar.bz2
+Source:        https://github.com/thesofproject/sof-bin.git/stable-v%{version}/sof-bin-%{version}.tar.bz2
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
@@ -20,8 +20,8 @@ Firmware and topology files for Sound Open Firmware project.
 %prep
 %setup -q -n sof-bin-%{version}
 
-# add missing symlink
-ln -s v1.4.2/intel-signed/sof-cnl-v1.4.2.ri lib/firmware/intel/sof/sof-cml.ri
+## add missing symlink
+#ln -s v1.4.2/intel-signed/sof-cnl-v1.4.2.ri lib/firmware/intel/sof/sof-cml.ri
 
 %build
 
@@ -29,10 +29,11 @@ ln -s v1.4.2/intel-signed/sof-cnl-v1.4.2.ri lib/firmware/intel/sof/sof-cml.ri
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
 install -d -m0755 %{buildroot}/lib/firmware
-cp -a lib/firmware/intel %{buildroot}/lib/firmware/
 
-# remove debug files
-find -P . -name "*.ldc" -exec rm -f {} \;
+SOF_VERSION=v%{version} ROOT=%{buildroot} ./go.sh
+
+## remove debug files
+#find -P . -name "*.ldc" -exec rm -f {} \;
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -54,5 +55,8 @@ find -P . -name "*.ldc" -exec rm -f {} \;
 %doc LICENCE.Intel
 
 %changelog
+* Sat Nov 14 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.6-1mamba
+- update to 1.6
+
 * Wed Apr 08 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.4.2-1mamba
 - package created using the webbuild interface