Revised advice message for firmware version compatibility (rev numbering 
was dropped around Jul 2013 and resumed as a timestamp on 19 Aug).

Reference: /n/sources/patch/applied/bcm-firmware-date
Date: Fri Sep 20 14:21:47 CES 2013
Signed-off-by: miller@hamnavoe.com

--- /sys/src/9/bcm/main.c	Fri Sep 20 14:18:14 2013
+++ /sys/src/9/bcm/main.c	Fri Sep 20 14:18:12 2013
@@ -17,7 +17,7 @@
 
 /* Firmware compatibility */
 #define	Minfirmrev	326770
-#define	Minfirmdate	"22 Jul 2012"
+#define	Minfirmdate	"19 Aug 2013"
 
 /*
  * Where configuration info is left for the loaded programme.
@@ -245,8 +245,8 @@
 	rev = getfirmware();
 	print("firmware: rev %d\n", rev);
 	if(rev < Minfirmrev){
-		print("Sorry, firmware (start.elf) must be at least rev %d (%s)\n",
-			Minfirmrev, Minfirmdate);
+		print("Sorry, firmware (start*.elf) must be at least rev %d"
+		      " or newer than %s\n", Minfirmrev, Minfirmdate);
 		for(;;)
 			;
 	}