And another tip. A few days ago Forkosigan from PocketBook published a small 'Service Firmware' on the
German forum.
This firmware update can be installed on top of 5.5 only. It calibrates the touchscreen, and is supposed to solve all touchscreen problems.
As this firmware update was published on April 1st I was not sure if I should take this seriously. Solve 'all' problems??? But the feedback on the German forum suggests that it does work.
I had some problems with the responsiveness of my touchscreen, and so decided to give this a try. I can't say yet if this update solves all
my problems - I just installed it.