diff --git a/Source/HBIOS/Makefile b/Source/HBIOS/Makefile
index 6a45ea2c..ea32f1c1 100644
--- a/Source/HBIOS/Makefile
+++ b/Source/HBIOS/Makefile
@@ -3,7 +3,7 @@ ifndef ROM_CONFIG
 endif
 
 ifdef ROM_PLATFORM
-	OBJECTS = ${ROM_PLATFORM}_${ROM_CONFIG}.rom ${ROM_PLATFORM}_${ROM_CONFIG}.com
+	OBJECTS = ${ROM_PLATFORM}_${ROM_CONFIG}.rom ${ROM_PLATFORM}_${ROM_CONFIG}.com ${ROM_PLATFORM}_${ROM_CONFIG}.upd
 else
 	OBJECTS += DYNO_std.rom DYNO_std.com DYNO_std.upd
 	OBJECTS += EZZ80_std.rom EZZ80_std.com EZZ80_std.upd
diff --git a/Source/HBIOS/sd.asm b/Source/HBIOS/sd.asm
index f9b92a2a..0ae34c9e 100644
--- a/Source/HBIOS/sd.asm
+++ b/Source/HBIOS/sd.asm
@@ -946,7 +946,16 @@ SD_INITCARD3:
 	LD	A,$40			; P0 = $40 INDICATES WE SUPPORT V2 CARDS
 	LD	(SD_CMDP0),A		; SET COMMAND PARM 0
 	CALL	SD_EXECCMDND		; EXEC COMMAND W/ NO DATA RETURNED
+	;RET	NZ			; ABORT ON ERROR
+	JR	Z,SD_INITCARD3AA	; IF GOOD SKIP AHEAD
+	; SOME CARDS DON'T SUPPORT ACMD41, SO TRY CMD1 AS ALTERNATIVE
+	LD	A,SD_CMD_SEND_OP_COND	; SD_CMD_SEND_OP_COND
+	CALL	SD_INITCMD		; SETUP COMMAND BUFFER
+	LD	A,$40			; P0 = $40 INDICATES WE SUPPORT V2 CARDS
+	LD	(SD_CMDP0),A		; SET COMMAND PARM 0
+	CALL	SD_EXECCMDND		; EXEC COMMAND W/ NO DATA RETURNED
 	RET	NZ			; ABORT ON ERROR
+SD_INITCARD3AA:
 	; CHECK FOR IDLE, EXIT LOOP IF IDLE CLEARED
 	LD	A,(SD_RC)		; GET CARD RESULT CODE
 	OR	A			; SET FLAGS