Unable to upgrade bootloader from firmware v2.4 on buspirate 3.0a September 12, 2019, 02:43:14 am I can connect fine with putty, so I am on the right device and baud rate. I am using linux mint, I have no windows boxs here. I tried the upgrader in the v2to21-bootloader0update-va2.zip. I don't wish to use the buspirate but I need an stk500-v2 programmer and this was on the shelf. Am I dead in the water here? I tried the jumper from pgc to pgd, I read that the buspirate doesn't have great linux support, should I abandon this and get a different programmer. I installed the pyserial library.sudo python ./P24qp.py -s=/dev/ttyUSB0 -a ==auto=BPv3-v2blupdaterVa3-v4.1.hex [sudo] password for gipetto: Using Serial Port =/dev/ttyUSB0 @ 115200Can't open serial port =/dev/ttyUSB0 !