diff --git a/firmware/build_wideband.sh b/firmware/build_wideband.sh
index 595085f..45bba50 100755
--- a/firmware/build_wideband.sh
+++ b/firmware/build_wideband.sh
@@ -12,9 +12,18 @@ rm ../for_rusefi/wideband_image.h
 make -j12
 
 # Copy the bin without the bootloader (the image consumed by rusEfi has no bootloader on it)
-dd if=build/wideband.bin of=build/wideband_noboot.bin skip=6144 bs=1
+dd if=build/wideband.bin of=build/wideband_noboot_no_pad.bin skip=6144 bs=1
+
+# extend the image out to full size (32k (flash) - 6k (bootloader) - 1k (config) - 4 (crc) = 25k - 4 = 0x63FC)
+arm-none-eabi-objcopy -I binary -O binary --gap-fill 0xFF --pad-to 0x63FC build/wideband_noboot_no_pad.bin build/wideband_fullsize_nocrc.bin
+
+# compute the crc and write that to a file
+crc32 build/wideband_fullsize_nocrc.bin | xxd -r -p - > build/wideband_crc.bin
+
+# Now glue the image and CRC together
+cat build/wideband_fullsize_nocrc.bin build/wideband_crc.bin > build/wideband_image.bin
 
 # Convert to a header file, and tack "static const " on the front of it
-xxd -i build/wideband_noboot.bin \
+xxd -i build/wideband_image.bin \
     | cat <(echo -n "static const ") - \
     > ../for_rusefi/wideband_image.h