Error because your your firmware version does not match BtleJack version 2.1

[trigat]

I flashed an Adafruit BLE with your firmware but it creates errors when running BtleJack version 2.1. I do not see any older versions available.

user@libra:~/$ btlejack -d /dev/ttyUSB0 -f 0x517eeade
BtleJack version 2.1

[i] Detected sniffers:

Sniffer #0: fw version 2.0
-!!!- You must update the firmware of this sniffer -!!!-
[i] Quitting, please upgrade your sniffer firmware (-i option if you are using a Micro:Bit)

[jhutchinfosec]

Would there likely be any issues with overriding this firmware check?

[ch4r13]

I've got this problem too. I already tried to flash all kind of firmware from this repo. I have Adafruit Le Friend nRF51822 It can only sniff with btlejack -d /dev/ttyUSB0 -s but when try something with -f or else did not work.