cpu_sig="$(iucode_tool --scan-system 2>&1 | sed -e 's/.*with signature //')"
-avail_line="$(iucode_tool -l -S -tb /lib/firmware/intel-ucode 2>&1 | grep "sig[[:space:]]*$cpu_sig")"
+cpu_flags="$(cat /sys/devices/system/cpu/cpu0/microcode/processor_flags)"
+avail_line="$(iucode_tool -l -s "$cpu_sig,$cpu_flags" -tb /lib/firmware/intel-ucode 2>&1 | grep "sig[[:space:]]*$cpu_sig")"
avail="$(echo "$avail_line" | sed -e 's/.*rev[[:space:]]*//; s/[,[:space:]].*//')"
if [ -z "$avail" ]; then