diff --git a/board/czechlight/beaglebone/rauc.scr.txt b/board/czechlight/beaglebone/rauc.scr.txt
index 8e5ba65..f2e1117 100644
--- a/board/czechlight/beaglebone/rauc.scr.txt
+++ b/board/czechlight/beaglebone/rauc.scr.txt
@@ -17,7 +17,7 @@
     if test ${BOOT_B_LEFT} -gt 0; then
       setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1;
       echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining";
-      rauc_part=4;
+      rauc_part=5;
       rauc_slot=B;
     fi;
   fi;
@@ -31,5 +31,5 @@
   saveenv;
   reset;
 fi;
-load mmc 0:${rauc_part} ${scriptaddr} /boot/boot.scr || reset;
+load mmc 1:${rauc_part} ${scriptaddr} /boot/boot.scr || reset;
 source ${scriptaddr} || reset;