diff --git a/brcmfmac43455-sdio.txt b/brcmfmac43455-sdio.txt
new file mode 100644
index 0000000..6801286
--- /dev/null
+++ b/brcmfmac43455-sdio.txt
@@ -0,0 +1,97 @@
+# Cloned from bcm94345wlpagb_p2xx.txt 
+NVRAMRev=$Rev: 498373 $
+sromrev=11
+vendid=0x14e4
+devid=0x43ab
+manfid=0x2d0
+prodid=0x06e4
+#macaddr=00:90:4c:c5:12:38
+macaddr=b8:27:eb:74:f2:6c
+nocrc=1
+boardtype=0x6e4
+boardrev=0x1304
+
+#XTAL 37.4MHz
+xtalfreq=37400
+
+btc_mode=1
+#------------------------------------------------------
+#boardflags: 5GHz eTR switch by default
+#            2.4GHz eTR switch by default
+#            bit1 for btcoex
+boardflags=0x00480201
+boardflags2=0x40800000
+boardflags3=0x44200100
+phycal_tempdelta=15
+rxchain=1
+txchain=1
+aa2g=1
+aa5g=1
+tssipos5g=1
+tssipos2g=1
+femctrl=0
+AvVmid_c0=1,165,2,100,2,100,2,100,2,100
+pa2ga0=-129,6525,-718
+pa2ga1=-149,4408,-601
+pa5ga0=-185,6836,-815,-186,6838,-815,-184,6859,-815,-184,6882,-818
+pa5ga1=-202,4285,-574,-201,4312,-578,-196,4391,-586,-201,4294,-575
+itrsw=1
+pdoffsetcckma0=2
+pdoffset2gperchan=0,-2,1,0,1,0,1,1,1,0,0,-1,-1,0
+pdoffset2g40ma0=16
+pdoffset40ma0=0x8888
+pdoffset80ma0=0x8888
+extpagain5g=2
+extpagain2g=2
+tworangetssi2g=1
+tworangetssi5g=1
+# LTECX flags
+# WCI2
+ltecxmux=0
+ltecxpadnum=0x0504
+ltecxfnsel=0x22
+ltecxgcigpio=0x32
+
+maxp2ga0=80
+ofdmlrbw202gpo=0x0022
+dot11agofdmhrbw202gpo=0x4442
+mcsbw202gpo=0x98444422
+mcsbw402gpo=0x98444422
+maxp5ga0=82,82,82,82
+mcsbw205glpo=0xb9555000
+mcsbw205gmpo=0xb9555000
+mcsbw205ghpo=0xb9555000
+mcsbw405glpo=0xb9555000
+mcsbw405gmpo=0xb9555000
+mcsbw405ghpo=0xb9555000
+mcsbw805glpo=0xb9555000
+mcsbw805gmpo=0xb9555000
+mcsbw805ghpo=0xb9555000
+
+swctrlmap_2g=0x00000000,0x00000000,0x00000000,0x010000,0x3ff
+swctrlmap_5g=0x00100010,0x00200020,0x00200020,0x010000,0x3fe
+swctrlmapext_5g=0x00000000,0x00000000,0x00000000,0x000000,0x3
+swctrlmapext_2g=0x00000000,0x00000000,0x00000000,0x000000,0x3
+
+vcodivmode=1
+deadman_to=481500000
+
+ed_thresh2g=-54
+ed_thresh5g=-54
+eu_edthresh2g=-54
+eu_edthresh5g=-54
+ldo1=4
+rawtempsense=0x1ff
+cckPwrIdxCorr=3
+cckTssiDelay=150
+ofdmTssiDelay=150
+txpwr2gAdcScale=1
+txpwr5gAdcScale=1
+dot11b_opts=0x3aa85
+cbfilttype=1
+fdsslevel_ch11=6
+
+# Improved Bluetooth coexistence parameters from Cypress
+btc_mode=1
+btc_params8=0x4e20
+btc_params1=0x7530
diff --git a/raspberrypi-firmware.spec b/raspberrypi-firmware.spec
index c79f410..774828b 100644
--- a/raspberrypi-firmware.spec
+++ b/raspberrypi-firmware.spec
@@ -7,7 +7,7 @@
 Name:          raspberrypi-firmware
 Epoch:         1
 Version:       4.19.1.20200114
-Release:       1mamba
+Release:       2mamba
 Summary:       Boot firmware files (except kernel) for the Raspberry Pi
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -26,6 +26,7 @@ Source20:      https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm802
 Source21:      https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm80211/brcm/brcmfmac43430-sdio.txt
 Source22:      LICENSE.brcmfmac
 Source23:      https://github.com/OpenELEC/misc-firmware/raw/master/firmware/brcm/BCM43430A1.hcd
+Source24:      brcmfmac43455-sdio.txt
 License:       GPL, LICENCE.broadcom
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
@@ -132,9 +133,10 @@ cp -R documentation/ilcomponents %{buildroot}%{_datadir}/doc/raspberrypi-kernel
 %endif
 
 install -d %{buildroot}/lib/firmware/brcm
-install -D -m0644 %{SOURCE20} %{buildroot}/lib/firmware/brcm/brcmfmac43430-sdio.bin
+#install -D -m0644 %{SOURCE20} %{buildroot}/lib/firmware/brcm/brcmfmac43430-sdio.bin
 install -D -m0644 %{SOURCE21} %{buildroot}/lib/firmware/brcm/brcmfmac43430-sdio.txt
 install -D -m0644 %{SOURCE22} %{buildroot}/lib/firmware/LICENSE.brcmfmac
+install -D -m0644 %{SOURCE24} %{buildroot}/lib/firmware/brcm/brcmfmac43455-sdio.txt
 
 install %{S:1} %{buildroot}/boot/config.txt
 install %{S:2} %{buildroot}/boot/cmdline.txt
@@ -205,8 +207,8 @@ install -D -m0644 %{SOURCE23} %{buildroot}/lib/firmware/BCM43430A1.hcd
 /boot/overlays/README
 /lib/firmware/LICENSE.brcmfmac
 /lib/firmware/BCM43430A1.hcd
-/lib/firmware/brcm/brcmfmac43430-sdio.bin
 /lib/firmware/brcm/brcmfmac43430-sdio.txt
+/lib/firmware/brcm/brcmfmac43455-sdio.txt
 /lib/systemd/system/brcm43438.service
 
 %if %include_kernel
@@ -247,6 +249,10 @@ install -D -m0644 %{SOURCE23} %{buildroot}/lib/firmware/BCM43430A1.hcd
 %endif
 
 %changelog
+* Wed Mar 04 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 4.19.1.20200114-2mamba
+- install brcmfmac43455-sdio.txt for rpi3/4 from raspbian
+- use brcmfmac43430-sdio.bin from linux-firmware (to be checked)
+
 * Sun Jan 26 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 4.19.1.20200114-1mamba
 - update to 4.19.1.20200114
 
@@ -291,7 +297,7 @@ install -D -m0644 %{SOURCE23} %{buildroot}/lib/firmware/BCM43430A1.hcd
 * Thu Apr 25 2013 Davide Madrisan <davide.madrisan@gmail.com> 20130425git-1mamba
 - update to 20130425git
 
-* Wed Mar 05 2013 Davide Madrisan <davide.madrisan@gmail.com> 20130301git-3mamba
+* Tue Mar 05 2013 Davide Madrisan <davide.madrisan@gmail.com> 20130301git-3mamba
 - rename the kernel subpackages to follow the openmamba schema
 
 * Sun Mar 03 2013 Davide Madrisan <davide.madrisan@gmail.com> 20130301git-2mamba