Hello Richard,
I think the most important lines in the logs are:
write_wp_bits: wp_verify failed: reg:1 actual:0x30 expected:0x0
and
Failed to unlock flash status reg with wp support.
wp means write-protection, write fails because chip fails to unlock. Can you try this just in case (might be the same result but still) https://www.flashrom.org/user_docs/fw_updates_vs_spi_wp.html#flashing-whole-...