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-rw-r--r--tmk_core/avr.mk4
1 files changed, 4 insertions, 0 deletions
diff --git a/tmk_core/avr.mk b/tmk_core/avr.mk
index 3bf2b34f88..6c03e1650e 100644
--- a/tmk_core/avr.mk
+++ b/tmk_core/avr.mk
@@ -107,6 +107,10 @@ flip: $(BUILD_DIR)/$(TARGET).hex
batchisp -hardware usb -device $(MCU) -operation start reset 0
dfu: $(BUILD_DIR)/$(TARGET).hex sizeafter
+ until dfu-programmer $(MCU) get bootloader-version; do\
+ echo "Error: Bootloader not found. Trying again in 5s." ;\
+ sleep 5 ;\
+ done
ifneq (, $(findstring 0.7, $(shell dfu-programmer --version 2>&1)))
dfu-programmer $(MCU) erase --force
else