Thanks for this guide, quite informative. I managed to disassemble the Kindle completely and replace the display. For other users, just be patient and wiggle the ports and connectors slowly until they come out. The same applies when putting back, it all comes nicely to the right place, just be patient. There is useful comment above about screen removal (prying the adhesive), when assembling the screen I used the insulation tape to fix it in position. After putting all the screws back, it will be fitted tightly by means of pressure from other parts, no need to apply adhesive or glue to to secure the screen.

Note about the small cable is the same as for the previous one: come from the outer edge of the device and gently lift the brown tab up and towards the inner side. The cable slides out.

Bigger cable: gently lift the brown plastic up and to the inner side, the cable also slides out.

Note about the small cable: approach the light brown plastic part from the outer edge of device with fingernail and gently flip (lift) towards the inner side. The cable can then be pulled out with e.g. tiny screwdriver.

Big cable is just lifted from the inner side up and towards the outer edge with fingernail.

Nice guide. Be careful when prying back cover open, left side at the back, from middle to bottom, you may damage screen ribbon cable (visible in step 5, orange mark) if you push too deep. I was lucky to just unplug it, so I replaced screen successfully.

NOTE: very helpful hints in notes from Mike Kobb, there is no need to remove all connectors and all screws. Motherboard can be flipped over together with the frame. It shortens the entire procedure to just 20-25 minutes.