After flashing new image with MCUMgr, the BLE DIS service is still returning old firmware version

[Oli]

I just flashed a new image on my device using MCUmgr. In the logs, when the device boots up, it shows the correct APP_VERSION string. 

    LOG_INF("Firmware version: %s", APP_VERSION_STRING);

returns:

I: Firmware version: 0.0.1

However, when I connect via BLE and read the firmware version from the DIS (Device Information Service) service, it returns the previous version of my firmware (`v0.0.3+0`). Here are my BT_DIS settings:

CONFIG_BT_DIS=y
CONFIG_BT_DIS_SETTINGS=y
CONFIG_BT_DIS_MANUF="my company"
CONFIG_BT_DIS_MODEL="my model"
CONFIG_BT_DIS_HW_REV=y
CONFIG_BT_DIS_HW_REV_STR="0.1"
CONFIG_BT_DIS_FW_REV=y
CONFIG_BT_DIS_SERIAL_NUMBER=y

I figured it might have something to do with CONFIG_BT_DIS_SETTINGS reading an old value from the settings but clearing settings/NVS doesn't seem to solve the problem. Please advise.

[Oli]

I believe it was due to not doing a pristine build for that image. But it's weird that it was showing the correct app version in the console but not in BLE DIS service...

[Hieu]

Hi Oli,

It is quite strange still, as changing the VERSION file should trigger a pristine build regardless.

It's good that things are working now. If it happens again, please reply here.

Hieu