The Kobo firmware version support in a particular calibre version is the same as always. It will probably be safe. If you have doubts, look for the thread discussing that firmware version in the Kobo forum to check. And in this case, it is definitely safe to follow the instructions in the warning message.
And even without that, there should be no issues sending books to the device. The actual send is independent on the firmware version. There is something done, but, that does not affect the book getting onto the device. When you eject the device, it should see them and import them. When problems like this are reported, my suggestion is to make sure the book is actually on the device before ejecting it, and to watch for the importing screen after the device is ejected. If it doesn't appear, you need to look at the file name and were the books are. If it does appear, and the books are not shown, then it is usually an problem with the book.
|