DFU MTU INCREASE

RE: DFU MTU INCREASE

AHaug — Thu, 25 Jan 2024 09:01:30 GMT

Hi Sergey,

Unless you were helped by the suggestion below, then we would like you to create a new case for this and we will assign an available engineer as soon as possible

Kind regards,
Andreas

RE: DFU MTU INCREASE

Sergey A. — Wed, 24 Jan 2024 23:57:25 GMT

Hi AHaug

I've got the same issue. File upload speed through BT SMP is painstakingly slow especially for Matter firmware with MCUboot which are about 800 kB.

What I did is just simply compiled and provisioned Matter lamp example on nRF52840 DK and without modifications you kindly suggested the upload speed was around 1.5 kB/s. After the modifications it became 3.7 kB/s. It's better but still much slower that I would expect. Is it possible to improve it a bit more?

Kind regards,

Sergey

RE: DFU MTU INCREASE

massimilianoripa — Mon, 11 Dec 2023 13:34:48 GMT

Hi Andreas,

thanks, now I will try and then I will come back to you.

Thanks

Massimiliano

RE: DFU MTU INCREASE

AHaug — Mon, 11 Dec 2023 12:48:09 GMT

Hi,

You can try applying the following configuration to your project to speed up the BLE DFU https://github.com/nrfconnect/sdk-nrf/blob/788b23cf8e20e9dcb1c5b1325c2142db947efb3b/samples/common/mcumgr_bt_ota_dfu/Kconfig#L122-L134

Let me know if this answers your question

Kind regards;
Andreas