industrialNETworX

I hope you don't run into a problem with booting from SD-Cards (see Chapter 11 in the netX Errata sheet).
But i suppose the problem is somewhere else (probably some problems with the linker description file).

The checksum fields are simple additions over the bootheader/application that are multiplied by -1 afterwards (for easier checking). It's ok that they do differ.

Did you check the entry and relocation start points that are patched into the bootheader?

The bootwizard uses the first section with the flags "WAX" (see arm-hitex-elf-readelf -S <.elf>) as relocation start address and the file length as total length. Check your linker file if you mixed sections and make sure you don't mix load and noload sections.

Also make sure that your resulting binary file has a filesize multiple of 4. This should be done automatically, but we had some linker description files that generated odd file sizes in the binary section.

Also make sure that the entrypoint is correct for your application (arm-hitex-elf-readelf -l <.elf>).

Regards

MT