[geekmaster]

That image looks like it is the wrong resolution, as if for a different model kindle with a higher resolution display. It also looks somewhat like a physically broken eink display (as if dropped or bumped), but that might be a side effect of a firmware issue.

Did the display work correctly before you began the downgrade procedure?

Please keep your kindle plugged into a charger until we return in the morning (it is bedtime here). We can probably help you, but we may have more questions to help guide us to a solution. Thanks for your patience.