Ok, I have tried unzipping the four v2 files above into my .kobo/iink/ directories, but still the Sync Required message persists.
Ive also tried leaving the four files in their .zip format, same result.
Moving onto Database stuff.
My elipse 2e contains a file
KoboReader.sqllite,
Opening this file with a database browser(
https://sqlitebrowser.org/)
I see there is a
Table with 33 entries.
Inside the
User entry the following fields look like they could be relevant.
NotebookSyncTime
NotebookSyncToken
SyncContinuationToken
SyncTokenAppVersion
AnnotationSyncToken
My entries for
NotebookSyncTime and
NotebookSyncToken are both
NULL
If somebody has two devices, one with sync required, one not, they could test adding the tokentime and token to the appropriate fields and report back.
Or, if you want to send me your datetime and token via PM I can try it in mine.
A side Note
User Quoth stated he succesfully copied files+Database from one kobo to another and it worked.
This implies the tokens are not based on the Unique serial of each device(or if they are, its not verified)