3 Replies Latest reply on Jun 30, 2015 1:59 PM by kwang

    Can not be power-on after OTA reset?

      ===

      SDK: 2.2.1

      Tag: 920737.

      app: OTA hello-sensor app code.

      OTA firmware size ~ 30KB.

      ===

       

      Description:

      Device can not be power-on after OTA reset via android/iOS handset.

       

      Investigation:

      Our current WP is default low for read/write when run-time storage and OTA download.

      in factory report, we find when we use handset to upgrade firmware, after programming done and
      do the system reset; device can not be power-on again. It seems boot area is destroyed for some reason.

       

      - do we need to add more delay between OTA re-program to NV and reset owing to
      that programming/erasing is on-going while system do the reset (but is boot-code area updated during that time?)

       

      - is it becoz firmware code near 30K so in SOC lower layer, it didnt check the program addr for the boot area??