diff --git a/src/constants.a b/src/constants.a
index 1c7a8675c..33ed21086 100644
--- a/src/constants.a
+++ b/src/constants.a
@@ -11,7 +11,7 @@
 ; ...unused...
 ; E000..E3FF - HGR font data
 ; ...unused...
-; E73A..FFEB - main program code
+; E730..FFEB - main program code
 ; FFEC..FFF9 - API functions and global constants available for main program
 ;              code, prelaunchers, transition effects, &c.
 ;              (LoadFileDirect, Wait/UnwaitForVBL, MockingboardStuff, MachineStatus)
diff --git a/src/prelaunch/flobynoid.a b/src/prelaunch/flobynoid.a
index 0bed1942e..9f8694294 100644
--- a/src/prelaunch/flobynoid.a
+++ b/src/prelaunch/flobynoid.a
@@ -27,7 +27,15 @@
          lda   #2
          sta   $B6D7
 
-         jsr   DisableAccelerator
+         lda   MachineStatus
+         and   #CHEATS_ENABLED
+         beq   +
+         lda   #$8E       ; STX
+         sta   cheat1
+         sta   cheat2
+         sta   cheat3
+
++        jsr   DisableAccelerator
 
          jsr   $BBB3
          jsr   $B627
@@ -43,15 +51,15 @@ hook_b !pseudopc $2c8 {
          lda   #$CE
          cmp   $AD9
          bne   +
-         stx   $AD9       ; patch - don't decrease lives
+cheat1   cpx   $AD9       ; SMC patch - don't decrease lives
 +        cmp   $1461
          bne   +
-         stx   $1461      ; patch - don't trigger anti-cheat
+cheat2   cpx   $1461      ; patch - don't trigger anti-cheat
 +        lda   $1893
          cmp   #$EE
          bne   +
-         stx   $1893      ; patch - don't increase lives
-         lda   $B088
+cheat3   cpx   $1893      ; SMC patch - don't increase lives
++        lda   $B088
          eor   #$0D
          bne   +
          sta   $B088      ; patch - don't trigger anti-tamper
diff --git a/src/ui.attract.hgr.a b/src/ui.attract.hgr.a
index c9267164d..7d6acd7d3 100644
--- a/src/ui.attract.hgr.a
+++ b/src/ui.attract.hgr.a
@@ -128,7 +128,13 @@ HGRTitleCallback
 @indexRecordPtr
          !word $FDFD                 ; SMC
 
+         lda   $5FFD
+         stx   $5FFD                 ; ensure that we won't find it again if next
+                                     ; file is really compressed
+         cmp   #$4C                  ; Check if screen hole now contains a JMP
+         beq   @noUnpack             ; if so, file was not packed, so skip unpack
          jsr   UnpackHGRTitle
+@noUnpack
          jmp   ExecuteTransitionAt6000AndWait
 
 ;------------------------------------------------------------------------------