ncs 1.3.0 firmware FOTA upgrade to ncs1.5.1 version failed

[george.zhou]

The application of a device is developed based on ncs1.3.0, now the SDK version is upgraded, the firmware function is developed based on ncs1.5.1, and a problem is found, the firmware running on ncs1.3.0 is upgraded to ncs1.5.1 through FOTA, and the upgrade can be successful , The function is normal, but once the device is reset or re-powered, the previously upgraded firmware will be changed back to the ncs1.3.0 version firmware, what is going on, it’s so strange! 

Thanks! !

[Albrecht Markus Schellenberger]

Hello George,

Does the application of the device call boot_write_img_confirmed(); after the firmware upgrade has been performed?

Regards,

Markus

[george.zhou]

Yes, boot_write_img_confirmed() is called in the application; add a little detail. The firmware developed on ncs1.3.0 can be upgraded successfully. After reset, it is still the upgraded firmware. The firmware developed on ncs1.5.1 can also be upgraded. After the upgrade is successful, it is the upgraded firmware after reset. However, if the firmware developed from ncs1.3.0 is upgraded to the firmware developed by ncs1.5.1, the upgrade can be successful, but after reset, it will change back to the firmware function of ncs1.3.0 version.