Quote:
Originally Posted by JSWolf
So sell KF8 instead. No need for Mobi.
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Older Kindles can't use KF8. They may not even have enough RAM even if Amazon wanted to. See DXG (B009) vs earlier Kindle Keyboard (B008, updated to have KF8).
So "Dual Mobi" is often used for ebook stores that don't offer two Kindle download links (which is confusing). Only Amazon knows exactly what Kindle a customer has and they convert the uploaded epub2 in advance to all the formats (old mobi, azw/KF8, and kfx) and deliver based on the customer choice if they have more than one model. They ask even for Download to PC, which model it's for if you have more than one model.
The main Amazon FW page lists 5.12.4 and "unavailable" at the PW3. This is unusual. I have the 5.12.4 on a PW3. I'm thinking that for particular versions of PW3 there is a problem with 5.12.4 and they are working on it, or else they'd not even list 5.12.4. It's not long since 5.12.4 or 5.12.5 was released, so it's premature to claim that Amazon have stopped supporting the PW3 with newer firmware. I bought my 2nd PW3 new off Amazon after they were already selling the PW4.