diff --git a/rbutil/mkamsboot/dualboot/dualboot.S b/rbutil/mkamsboot/dualboot/dualboot.S
index 8bb2059..2f94bc2 100644
--- a/rbutil/mkamsboot/dualboot/dualboot.S
+++ b/rbutil/mkamsboot/dualboot/dualboot.S
@@ -101,7 +101,7 @@ uclcopy:
 /* TODO : M200V4 ? */
 #if defined(SANSA_CLIP) || defined(SANSA_CLIPV2)
 #define USB_PIN 6
-#elif defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2)
+#elif defined(SANSA_FUZE) || defined(SANSA_E200V2)
 #define USB_PIN 3
 #endif

@@ -213,19 +213,55 @@ uclcopy:

         cmp     r1, #0
         beq     boot_of
-#elif defined(SANSA_E200V2) || defined(SANSA_FUZE) || defined(SANSA_FUZEV2)
+#elif defined(SANSA_E200V2) || defined(SANSA_FUZE)
         ldr     r0, =GPIOC
         mov     r1, #0
         str     r1, [r0, #0x400]
         ldr     r1, [r0, #0x20]    /* read pin C3 */

         cmp     r1, #0             /* C3 = #0 means button pressed */
-#ifdef SANSA_FUZEV2
-        /* the logic is reversed on the fuzev2 */
-        bne     boot_of
-#else
         beq     boot_of
-#endif /* SANSA_FUZEV2 */
+
+#elif defined(SANSA_FUZEV2)
+        ldr     r0, =GPIOC
+        mov     r1, #0
+        str     r1, [r0, #0x400]
+        ldr     r1, [r0, #0x40]    /* read pin C4 */
+
+        cmp     r1, #0             /* C4 != #0 means select pressed */
+        bne     boot_of
+
+        ldr     r2, =0xC810000C     @ CCU_IO
+        ldr     r3, [r2]
+        bic     r3, r3, #(1<<12)    @ clear bit 12
+        str     r3, [r2]
+
+        ldr     r2, =GPIOB
+        mov     r3, #(1<<0)
+        ldr     r4, [r2, #0x400]
+        orr     r4, r4, r3          @ GPIOB_DIR: pin0 out
+        str     r4, [r2, #0x400]
+
+        str     r3, [r2, #0x4]      @ GPIOB_PIN(0) = 1
+        mov     r4, #500
+1:      nop
+        subs    r4, r4, #1
+        bne     1b
+
+        ldr     r4, =GPIOD
+        ldr     r3, [r4, #0x400]
+        bic     r3, r3, #(1<<6)
+        ldr     r3, [r4, #0x100] @ read d6 and discard it
+
+        mov     r3, #0
+        str     r3, [r2, #0x4]      @ GPIOB_PIN(0) = 0
+        mov     r4, #240
+1:      nop
+        subs    r4, r4, #1
+        bne     1b
+
+        ldr     r1, [r0, #0x20]    /* read pin C3 */
+        bne     boot_of            /* C3 != #0 means left pressed */

 #elif defined(SANSA_CLIPPLUS)
         @ read pins