Hmmm.... I really don't know how to explain this, but I woke up in the morning and my Kindle is in a diagnostics mode finally! So my device was left 3 full days in a charger. It seems this guy under the tree has just finished his book
So another solution for frustrated part of Kindle society. Leave it in a charger and go for holidays.
I'll keep fighting today.
EDITED: Launched Kubrick CD, flashing device once more, Kindle restarted and... guy returned under his tree. So maybe booting takes 12 hours or so. But why? Maybe there is some corrupted book in a file system or simply there is no more space on Kindle device and I should remove some files?
Can you give me an advice how can I mount my Kindle so I can delete all of unnecessary book stuff?