How to make the matching and binding equipment information would be stored permanently, even after the OTA upgrade is still in

[???]

HI: everyone! How to make the matching and binding equipment information would be stored permanently, even after the OTA upgrade is still in;I made with examples of the official, the program of heart rate, for now, matching, binding and OTA has achieved, but there is a problem, is when I have good matching and binding equipment information, through OTA upgrade, after the original match was gone, through the LOG print to see before binding equipment information already all clear；My English is very poor, this is through the translation software, hope you can understand; 1:my sdk version is sdk9.0; 2:sd version:sd 8.1; 3:I USE code in the bond!

[???]

not work,but i change application have to edit the PSTORAGE_NUM_OF_PAGES define in pstorage_platform.h,change the define num 10 to 2,however,I try to change DFU_APP_DATA_RESERVED to 0xc00 or 0x1000, it's worksuccessful,I do not know why,can you tell me?by the way,my code in bootloader the PSTORAGE_NUM_OF_PAGES define in pstorage_platform.h is define 3.

[bjorn-spockeli]

The bonding information is usually stored on the first flash page of the PSTORAGE_NUM_PAGES reserved for the pstorage module. The application data(if there are any) will be placed on the second and the swap page at the last page, as shown on this page in our Infocenter. If there is a bootloader present the start address of the flash pages will be at 0x3C000 - 0x400 x PSTORAGE_NUM_PAGES and DFU_APP_DATA_RESERVED will preserve all pages from 0x3C000 to 0x3C000- DFU_APP_DATA_RESERVED, see the figure I have attached in my answer. Thus, if you set PSTORAGE_NUM_PAGES to 10 you have to set DFU_APP_DATA_RESERVED to 0x400 xPSTORAGE_NUM_PAGES to preserve the bonding data.