## Thanks to Andreas Radke of Arch Linux 
Index: hplip-3.13.5/config_usb_printer.py
===================================================================
--- hplip-3.13.5.orig/config_usb_printer.py	2013-05-10 06:09:32.000000000 -0400
+++ hplip-3.13.5/config_usb_printer.py	2013-05-31 10:29:17.000000000 -0400
@@ -257,7 +257,7 @@
        # ******************************* RUNNING FIRMWARE DOWNLOAD TO DEVICE FOR SUPPORTED PRINTER'S
        fw_download_req = mq.get('fw-download', False)
        if fw_download_req:
-           fw_cmd = utlis.which('hp-firmware', True)
+           fw_cmd = utils.which('hp-firmware', True)
            if fw_cmd:
                 fw_cmd += " -y3 -s %s"%param
                 log.debug(fw_cmd)