Look for a dedicated "Update" or "Firmware" button within the device's settings menu if it has a display.
Since this model is not widely documented, you will need to become a detective. bkm33btv2pcb updated
Since it's an updated PCB, tracking what's changed from the previous version could be important. Features like revision comparison, bill of materials (BOM) updates, or notes on design improvements. Look for a dedicated "Update" or "Firmware" button
: Improved ground planes to minimize electromagnetic interference (EMI) from the monitor's flyback transformer. Recent Updates and Modifications bill of materials (BOM) updates