Quote:
Originally Posted by JSWolf
If the program/device handles KFX and there is a KFX version available, you'll get KFX. If the program/device handles KF8 and there is a KF8 version available, you'll get KF8. If the device doesn't handle KF8, you'll get Mobi. If you have a device registered to your account and you USB download the eBook, you get KF8 if there is such otherwise you get Mobi.
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Holy cow. Thank you SO MUCH for explaining this. I plan on getting a 10-block of ISBNs and will need one for every different format. But if Amazon only allows uploading the ebook in mobi when I publish, how do I make the other formats available to Amzn? (sorry for being so dense!)
EDIT:
Found this (third post down) which explains (what you already know)... that when KindleGen creates a mobi from an epub it actually creates two books, one in Mobi7 for older Kindles, and one in KF8 for newer, both zipped into the single resulting mobi. So I guess the files are generated automatically by Amazon. [edit out ISBN question as it looks like all Kindle formats can use the same ISBN from what I read]