MCUMgr SerialRecovery too slow

[Jayant Tang]

Hello DevZone,

For some reason, some customers didn't want to add an external flash on their module. So I advice them to use MCUBoot SerialRecovry single bank DFU.

I modified a Matter Lock project byreferring this(Exercise 1 - DFU over UART - Nordic Developer Academy).  And I tried the Serial Recovery, but it's too slow:

The UART baudrate is 115200, almost 100kbps. But the actual speed is only 1kbps.

Is there anyway to increse the UART DFU speed?

The hardware is nRF54L15.

Best regards,

Jayant.

[Jayant Tang]

My project:

7215.lock.zip

DFU commands:

mcumgr conn add testDK type="serial" connstring="COM3,baud=115200,mtu=512"

mcumgr -c testDK image list

mcumgr -c testDK image upload D:\Project\lock\build\lock\zephyr\zephyr.signed.bin

mcumgr -c testDK reset