Hi, this seems like a serious problem.
1. I don't think that the specific solution is covered in this thread, although AmrBanawan has provided you with some final solution advice that might be it.
2. However, I would not give up too quickly.
-- You could try to download the First Aide package and see if you can get a response from the machine while in the fastboot mode.
--Also, you should use the "search" tool in xda (and in Google!) to see how others have recovered from similar errors.
3. For example, I have added a link to a thread generated by others who have the same "OMAP4x30 device" and no access problem - or something close to that. It appears that in at least one case of reading and trying to make their kindle work again they succeeded. Here is just one of the threads:
http://xdaforums.com/showthread.php?p=20728059
Frankly speaking however, if using search to go through the 180 pages of entries seems "soo long" to seek a solution, then perhaps the problem is not as serious as it sounds.
Good Luck
Well I get your point with being lacy on reading the 180 pages, but of course I want my KF2 to work again - and thanks for contribuing anyway.