After reset I'm trying to install Update_jailbreak_hotfix_1.14_5.8.10_install.bin.

And file just disappear from kindle. And the button install Update Your Kindle is greyed out. No chance to install it. Anything I did wrong?
Tried to install Kual and it says "The item failed to close propertly. Device will restart in 5 seconds".

I did reset before and everything was ok. When I did it before, Update Your Kindle was not greyed out. And Update_jailbreak_hotfix_1.14_5.8.10_install.bin installed no problem previous times. What can be wrong this time?