Could you specify what version of the SDK you are using and could you specify for what reason your wish to disable the OTA function for? I'm assuming that you refer to OTA DFU in general? If so, then you must be aware that DFU is mandatory for Matter devices.
W.r.t the external flash, it might also be required for the nRF54L15 depending on the size of your firmware.
Could you specify what version of the SDK you are using and could you specify for what reason your wish to disable the OTA function for? I'm assuming that you refer to OTA DFU in general? If so, then you must be aware that DFU is mandatory for Matter devices.
W.r.t the external flash, it might also be required for the nRF54L15 depending on the size of your firmware.
