There have been a few VESC 75/R2 (V1.12) sent with R1 firmware installed. The problem ith that firmware is Bluetooth functionality. For Bluetooth and some Comm communication you need the correct R2 Firmware.
The firmware can be found here:
https://github.com/vedderb/vesc_tool/blob/master/res/firmwares/75_300_R2...
Installation: Open VESC-Tool, go to Firmware >> open Custom Firmware Tab >> choose the downloaded R2 firmware file >> click upload.
Installing the R2 firmware will rectify the BLE issues.
When updating the FW, how do you know what hardware version to use?
There are three versions available in the VESC-tool (75_300, 75_300_R2 and 75_300_R3)