diff --git a/seqs/raspberry.sh b/seqs/raspberry.sh
index 6aef225..08a57ce 100755
--- a/seqs/raspberry.sh
+++ b/seqs/raspberry.sh
@@ -14,6 +14,11 @@ distName=
 RPI_BOOT_CONFIG="/boot/config.txt"
 
 step_config() {
+  # Shift away args
+  local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+  # Set download url with specified CPU architecture
+  PIDOWNURL="https://downloads.raspberrypi.org/raspios_lite_${PIARCH}_latest"
+
   if [ "$(which lsb_release)" == "" ] ; then
     echoerr " [W] Cannot detect OS. Assuming Ubuntu"
     osName="Ubuntu"
@@ -27,9 +32,12 @@ step_config() {
     osName="Ubuntu"
   fi
 
-  echo " [I] Detected OS: $osName $distName"
+  echoseq "     Detected OS: $osName $distName"
+  echoseq "     Requested CPU Architecture: $PIARCH"
 }
 
+PIARCH=armhf
+PIDOWNURL=
 SDDEV=
 SDBOOT=
 SDBOOTPUUID=
@@ -42,35 +50,76 @@ HDROOTPUUID=
 HDSWAP=
 HDSWAPPUUID=
 
-step_1_info() { echo "Download latest Raspberry Pi OS lite image from"
-echoinfo "$downUrl"; }
+evalArgs() {
+  local argCount=0
+  
+  for arg in "$@"; do
+    case "$1" in
+      -a|--arch)
+        if [ ! -z "$2" ]; then 
+          PIARCH="$2"
+          ((argCount+=2))
+        else
+          ((argCount+=1))
+        fi
+        shift $argCount
+        ;;
+      *)
+        break
+        ;;
+    esac
+  done
+  return $argCount
+}
+
+step_1_info() { 
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+  
+  echoinfoArgs "[OPTIONS] [SD CARD DEVICE] [HD DEVICE]"
+  echo "Download latest Raspberry Pi OS lite image $PIARCH"
+  if [ $CONTEXT_EXE -ne 0 ]; then
+    echoinfo "Download URL: $PIDOWNURL"
+  else
+    echoinfo " [OPTIONS]"
+    echoinfo "  -a, --arch  :  armhf (default), arm64"
+  fi
+}
 step_1_alias() { ALIAS="setup"; }
 step_1() {
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+  
   if [ ! -f "$downLoc" ] ; then
-    exe wget "$downUrl" -O "$downLoc"
+    exe wget "$PIDOWNURL" -O "$downLoc"
     echo -ne " [I] sha256 sum of download:\n     "
     exe sha256sum "$downLoc"
   fi
   downImgName="${downDir}/$(zipinfo -1 "$downLoc")"
   if [ ! -f "$downImgName" ] ; then
     exe unzip "$downLoc" -d "$downDir"
-    endReturn -o $? "Unzip raspios image failed"
+    endReturn -o $? "Unzip raspios image $PIARCH failed"
   fi
 }
-downUrl="https://downloads.raspberrypi.org/raspios_lite_armhf_latest"
 downImgName=""
 downDay=$(date +%Y%m%d)
 downDir="/tmp"
 downLoc="${downDir}/raspios_$downDay.zip"
 
 step_2_info() { 
-  echoinfoArgs "[SD CARD DEVICE]"
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
+  echoinfoArgs "[OPTIONS] [SD CARD DEVICE]"
   echo "Write Raspberry Pi OS image to SD card"
   echoinfo "This operation will delete all data previously on the SD card!"
-  [ $CONTEXT_EXE -ne 0 ] && [ ! -z $2 ] && echoinfo "   [SD CARD DEVICE]: $2" 
+  [ $CONTEXT_EXE -ne 0 ] && [ ! -z $1 ] && echoinfo "   [SD CARD DEVICE]: $1" 
 }
 step_2_alias() { ALIAS="writesd"; }
 step_2() {
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
   if [ "$downImgName" == "" ] ; then
     # called again to make sure $downImgName is populated
     step setup
@@ -83,14 +132,14 @@ step_2() {
     endReturn -o 1 "No root"
   fi
 
-  read_sd_dev "$2"
+  read_sd_dev "$1"
   # check if device was confirmed
   if [ $? -ne 0 ] ; then
     endReturn -o 1 "SD card device not found"
   fi
 
   # write image
-  exe dd bs=4M if="$downImgName" of="$SDDEV" conv=fsync
+  exe dd bs=8M if="$downImgName" of="$SDDEV" conv=fsync
   endReturn -o "$?" "Writing image to $SDDEV failed"
   exe sync
 
@@ -105,15 +154,20 @@ step_2() {
 }
 
 step_3_info() { 
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
   echoinfoArgs "[SD CARD DEVICE]"
   echo "Prepare SD for first run"
   if [ $CONTEXT_EXE -ne 0 ]; then
-    shift
     [ ! -z $1 ] && echoinfo "   [SD CARD DEVICE]: $1"
   fi
 }
 step_3() {
-  if [ -z $2 ] && [ ! -z $SDDEV ] ; then
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
+  if [ -z $1 ] && [ ! -z $SDDEV ] ; then
     if [ $QUIET -ne 0 ] ; then
       answer="n"
     else
@@ -132,7 +186,7 @@ step_3() {
     esac
   fi
 
-  read_sd_dev "$2"
+  read_sd_dev "$1"
   endReturn -o $? "SD card device not found"
 
   if [ ! -w "$SDBOOT" ] ; then
@@ -151,19 +205,24 @@ step_3() {
 }
 
 step_4_info() { 
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
   echoinfoArgs "[SD CARD DEVICE] [HD DEVICE]" 
   echo "Prepare SD card to boot from hard disk"
   if [ $CONTEXT_EXE -ne 0 ]; then
-    shift
     [ ! -z $1 ] && echoinfo "   [SD CARD DEVICE]: $1"
     [ ! -z $2 ] && echoinfo "        [HD DEVICE]: $2"
   fi
 }
 step_4_alias() { ALIAS="hdboot"; }
 step_4() {
-  read_sd_dev "$2"
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
+  read_sd_dev "$1"
   endReturn -o $? "SD detection error $?"
-  read_hd_dev "$3"
+  read_hd_dev "$2"
   endReturn -o $? "HD detection error"
   echo " [I] SD: $SDDEV" 
   echo "         $SDBOOT [$SDBOOTPUUID]"
@@ -217,23 +276,28 @@ step_4() {
 }
 
 step_5_info() { 
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
   echoinfoArgs "[SD CARD DEVICE] [HD DEVICE]"
   echo "Prepare HD for boot (TODO)"
 
   if [ $CONTEXT_EXE -ne 0 ]; then
-    shift
     [ ! -z $1 ] && echoinfo "  [SD CARD DEVICE]: $1"
     [ ! -z $2 ] && echoinfo "       [HD DEVICE]: $2"
   fi
 }
 step_5() {
+  # Shift away args
+  shift; local lArgs=( "$@" ); evalArgs "${lArgs[@]}"; shift $?
+
   #TODO
   echoerr " [E] Not ready yet...TODO"
   #return 1
-  read_sd_dev "$2"
+  read_sd_dev "$1"
   endReturn -o $? "SD detection error $?"
 
-  read_hd_dev "$3"
+  read_hd_dev "$2"
   endReturn -o $? "HD detection error"
   echo " [I] SD: $SDDEV" 
   echo "         $SDBOOT [$SDBOOTPUUID]"