diff --git a/bootloader/hos/hos.c b/bootloader/hos/hos.c
index a78ef28..c56fc21 100644
--- a/bootloader/hos/hos.c
+++ b/bootloader/hos/hos.c
@@ -644,7 +644,8 @@ int hos_launch(ini_sec_t *cfg)
 	_free_launch_components(&ctxt);
 
 	// Copy BCT if debug mode is enabled.
-	// memset((void *)0x4003D000, 0, 0x3000);
+	if (ctxt.pkg1_id->kb != KB_FIRMWARE_VERSION_600)
+		memset((void *)0x4003D000, 0, 0x3000);
 	if (ctxt.debugmode)
 		_copy_bootconfig(&ctxt);