How To make ? Non-Secure SLIM OTA Bootloader on nRF52810

[Tencho]

Hello, 
I found this blog post in google and I decide to try it. I have couple of NrF52810 currently that we struggle with the limited space and the solution described in the post it's doable for purpose of the project. I did manage to build secure bootloader with S112 SoftDevice, but in the moment I turn off the cryptography (#NRF_CRYPTO_ENABLED 0) the build is not possible.

Did somebody try this method for reducing size of the bootloader and how I can solve this errors? 

[Amanda Hsieh]

Hi,

Seems that post lost some detail.  

You need to do more changes than just disable NRF_CRYPTO_ENABLED. There is an "open bootloader" project in the SDK, but this still requires signature verification for bootloader updates, but not application or softdevice. Removing signature verification altogether and removing the crypto-related code would require a bit of work as the code has not been written with that in mind. I do not expect it is a huge task though, as you can see how signature verification is skipped with the open bootloader project. 

Regards, 
Amanda