diff --git a/.github/workflows/hw-ci/openocd_wipe_and_flash.sh b/.github/workflows/hw-ci/openocd_wipe_and_flash.sh
index 48c48c06c3..208c84ba68 100755
--- a/.github/workflows/hw-ci/openocd_wipe_and_flash.sh
+++ b/.github/workflows/hw-ci/openocd_wipe_and_flash.sh
@@ -13,4 +13,4 @@ set -e
 cd firmware
 
 # works on F4 with ST-LINK/V3 does not seem to work using V2 :(
-openocd -f "$HW_SCRIPT" -c init -c targets -c "reset halt" -c "flash erase_sector 0 0 11" -c "flash write_image "deliver/rusefi.bin" 0x08000000" -c "reset run" -c "shutdown"
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+openocd -f "$HW_SCRIPT" -c init -c targets -c "reset halt" -c "flash erase_sector 0 0 last" -c "flash write_image "deliver/rusefi.bin" 0x08000000" -c "reset run" -c "shutdown"
\ No newline at end of file