I also have a Clara HD, with the last firmware version before Instapaper. Yes, it is slow, as all ereaders with a Freescale CPU. You cannot really do anything about that, but the speed is quite enough (should be) for book reading.
It has dark mode (not the inverted mode, but that one is also an option) through Nickelmenu. I doubt that an older firmware version would be faster.
But if you decide to experiment with it, make sure you don’t install firmware older than the version it came with from the factory.
|