Greetings!
I recently got a hold of a Ruuvi Pro tag and the previous owner seems to have flashed Mira OS software in it. I’ve tried reflashing (DFU from nRF Nordic) but it says the firmware (ruuvitag_b_armgcc_ruuvifw_default_v3.31.1_dfu_app.zip)) is not compatible. I don’t have access to a jtag programmer or anything like that.
I there a way for me to get the original Ruuvi firmware back on the tag?
Hardware is : B8 if that matters.
Thank you