--- drivers/blazer_usb.c.orig	2015-03-10 12:21:44.000000000 +0300
+++ drivers/blazer_usb.c	2016-01-19 14:16:45.523477000 +0300
@@ -427,7 +427,9 @@ int blazer_command(const char *cmd, char
 		fatal_with_errno(EXIT_FAILURE, "Got disconnected by another driver");
 
 	case -EPERM:		/* Operation not permitted */
-		fatal_with_errno(EXIT_FAILURE, "Permissions problem");
+		/* fatal_with_errno(EXIT_FAILURE, "Permissions problem"); */
+		upsdebugx(1, "Permission problem ignored for cmd=%s", cmd);
+		break;
 
 	case -EPIPE:		/* Broken pipe */
 		if (usb_clear_halt(udev, 0x81) == 0) {