Fixed Stack Bootloader - compatibility of bootloader with various bootloadables

[EyGe_3183606]

Hi,

We are using the Fixed Stack Bootloader example and we have a basic version of the bootloader (let's call it V1) which supports several bootloadable applications.

These bootloaders are burned on one thousand devices at the moment.

We are planning in the future to make a change to the bootloader (let's call it V2) and install it on the second batch of devices (an additional 1 thousand devices). For those devices, the bootloadable application  will also change but we would like to load that bootloadable version also on the first batch of devices with bootloader V1. How can we guarantee that they will be compatible?

I ask since we sometimes see that even if the bootloadble version hasn't changed but the bootloader changed, then the same cyacd file won't work with both bootloaders but rather only with the bootloader it was compiled with. We need to find a solution for this. Any suggestions?

Thanks,
David

[GeonaP_26 · Accepted solution]

Please confirm whether flash consumption of Bootloader_v1 is more compared to Bootloader_v2 and the bootloader host is throwing 'The flashrow is not valid for the selected array'. If yes, please refer to Bootloader Host Error: “The Flash Row is not Valid for the Selected Array” - KBA221445 

Let me know if it helps.