Do all nrf51/52 chips support FOTA?

[dlevtonyuk]

Are there any of your chips that couldn't naturally support FOTA?

Specifically, I'm looking at the nRF52810 and just double checking all the features.

[endnode]

In principle yes, whatever has radio it allows you to develop SW which will make it bootloading over the air;) Indeed some straightforward methods require certain amount of available NVM to store new image and then switch. As nRF52810 has only 192kB of flash and current Nordic S112 V5.1.0 alpha stack consumes 100kB you will have trouble to use this simple DFU method and you will probably need to do some magic (like compression or adopting some smaller BLE stack or developing your own or simply say with BLE stack only and upgrade only your "running" application FW on top of it). Alternatively you can put any 256kB SPI flash chip on your board if you want to stay with that "simple" DFU scheme and just use that (+ write your bootloader which will just use image from external NVM instead of nRF5x flash).