nRF9160 - SDK 3.1.0 - FOTA

RE: nRF9160 - SDK 3.1.0 - FOTA

Øyvind — Tue, 09 Dec 2025 08:54:50 GMT

[quote user="sravan.rikka"]2. Assume application firmware size is 100KB, is it possible to send 100KB binary file in single instance? or we have to send in chunks like 1KB, 1KB,,,,,,,,,,,1KB(100 times)?[/quote]

This would depend on the average transfer speed, i.e. if you look at the LTE technology i.e. LTE-M or NB-IoT

Features	LTE-M	NB-IoT
Also known as	LTE CAT-M1, Enhanced Machine Type Communication (eMTC)	LTE Cat-NB1 (3GPP rel 13)	LTE Cat-NB2 (3GPP rel 14)
Bandwidth	1.4 MHz	200 kHz	200 kHz
Max throughput (DL/UL)	300/375 kbps	30/60 kbps	127/169 kbps

These numbers depend on the coverage, network, etc. Have a look at our Download client. Note that there is a limitation TLS limitation in the modem itself as well, please see modem FW release notes

Kind regards,
Øyvind

RE: nRF9160 - SDK 3.1.0 - FOTA

sravan.rikka — Mon, 08 Dec 2025 10:24:02 GMT

Hi Øyvind,

2. Assume application firmware size is 100KB, is it possible to send 100KB binary file in single instance? or we have to send in chunks like 1KB, 1KB,,,,,,,,,,,1KB(100 times)?

Regards,

Sravan Rikka

RE: nRF9160 - SDK 3.1.0 - FOTA

Øyvind — Mon, 08 Dec 2025 10:14:36 GMT

Hello,

[quote user=""]1. Radio Firmware upgrade supports only HTTP server?[/quote]

No, using Serial LTE Modem you should also be able to upgrade using HTTPS as well.

[quote user=""]2. Application can be transferred as a complete file instead of chunks of packets?[/quote]

Could you please elaborate?

Kind regards,
Øyvind