my US errors have gone up, and I put it down to a different spread of US bitloading as my US snrm across the 3 US frequencies is spread differently to when I was on 204, I expect this is something that is calculated at sync time based on the power management and as such can cause variances in error rates from one sync to the next.
As soon as I observed my chipset version increased, I did try to get information if a g.inp rollout is incoming but heard nothing back thats positive
The only person I know off who has said it may be coming is black sheep a few backs in a reply he made to when I commented there was no ECI g.inp profiles setup.
Given the risk of problems a firmware/card change can introduce tho I wonder if openreach would bother to upgrade firmware for minor fixes.