Doesn't appear to work with STM32L071xx

[Jacob]

When I try to program the STM32L071KZ on my board using this utility I encounter the error below:

$ java -jar BootStm32.jar -p=/dev/ttyUSB0 -f=myprogram.hex 
1499874245686 [bootstm32.BootAPI]: Trying connect to STM32 UART bootloader
1499874245686 [bootstm32.BootAPI]: Waiting... [9s]
1499874245697 [bootstm32.BootAPI]: STM32 UART bootloader connected
1499874245714 [bootstm32.BootAPI]: Bootloader version = 3.1
1499874245729 [bootstm32.BootAPI]: Product ID = 0x0447 -> Unknown product
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