Another experiment on nRF51822 fitness band

Hi @fanoush,

Thanks for the firmware information as edit. I just upgraded the tracker from version 00.07.11 to 00.07.13.

As for firmware model number, I see in FCC photos that something is also on the board itself, I don't see that part on your photos

Yes it is there, hidden behind the flex cable, with the same details.

After upgrade if searched the firmware file in mobile and found a hband.zip file.

Zip has 3 files

1. manifest.json
   
2. VPH_10_00071300_151.bin
   
3. VPH_10_00071300_151.dat
   
   

This confirms your statement about firmware.

manifest.json

{
    "manifest": {
        "application": {
            "bin_file": "VPH_10_00071300_151.bin",
            "dat_file": "VPH_10_00071300_151.dat",
            "init_packet_data": {
                "application_version": 255,
                "device_revision": 1,
                "device_type": 1,
                "firmware_crc16": 38123,
                "softdevice_req": [
                    65534
                ]
            }
        },
        "dfu_version": 0.5
    }
}

I don't know if this is a good news for me or not.

So when I have the firmware, how to extract the details like pin info, display etc.

What should I do as a next step?

I am really really sorry for asking such a novice questions.

Regards,
Abhinav