Quote:
Originally Posted by DNSB
updating their old Kobo to 4.0 and then copying the database
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I'd be surprised if that matters.
The database update process should be the same. As far as I can tell, it checks the version number and then incrementally runs all the required update steps. If you factory reset your old Kobo Touch and copy a stone age version database over it should still be able to update it to the current version... that's the theory anyways.
But by all means, give it a try
Another thing you can try is ... directly powering off / rebooting the device instead of pulling the USB cable after copying stuff over & ejecting the device. In case the database update code only runs on bootup (which is what usually happens when you update firmware)... but somehow I don't think so, since so far replacing the databse through usb seems to have worked fine