UICR CUSTOMER is erased or not by OTA

[Yoshiyuki Kasai]

Hi all,

Could you please tell me if UICR CUSOTMER is erased or not by OTA?

Thanks

[Susheel Nuguru]

No it should only delete the pages and should not touch any UICR registers. Which softdevice version are you using?

[Yoshiyuki Kasai]

Thank you, Aryan.

I use S310 ver 3.0.0 with SDK 9.0.0. I will use DFU Device Information in UICR as dfu_init, and I wanted to know it is possible to change DFU Device Information in this case.

If I need to change the DFU Device Information, I should put it the information program area, not UCIR. Is it true?

[Yoshiyuki Kasai]

I have one more question. How is FWID? It is also in UCIR registers. Can FWID be rewrited, If I update SoftDevice by OTA?

[Susheel Nuguru]

I think FWID in UICR is deprecated. meaning we do not use it. If you want to get the FWID then you can use the macros in nrf_sdm.h and you can see that it is located at address 0X0000300C

[Yoshiyuki Kasai]

Thank you for your answer. I understand it.