How do I re-download the firmware without changing the MAC address?

[Anonymous]

I have downloaded the firmware to my a Bluetooth device, and the device have a Specified MAC address. How do I re-download the firmware without changing the MAC address?

[Anonymous]

Is it for development usage?

You can check the address, put it into SDK and build/program your new firmware.

For production stage, why don't you use uart_firmware_upgrade as old firmware programed.

I think it keeps the address during updating.

[Anonymous]

It is production stage. I did not lead to 32-pin and 32-pin. I upgrade only by UART-TX and UART-RX.

[Anonymous · Accepted solution]

In my understanding, you program a test firmware with the address first.

Then you'd like to re-program a production firmware after some tests.

You can use a firmware based on uart_firmware_upgrade as a test firmware.

It allows you to keep address.

If you already programmed a test firmware w/o upgrade function,

you should check the address in the module, change the value in SDK and program the firmware with same address.

[Anonymous]

Understand, but I just put out the UR_TX and UR_RX port, so I can not use uart_firmware_upgrade as old firmware program. Anyway, thank you very much for your help

[Anonymous]

OTA upgrade also keeps the original address.

It's not suitable for mass production. But please check it.

[ShawnA_01]

There is always this helpful link:   BD_ADDR: Changing your Board Address for Development and Production