We are sorry that BOOX e-readers are currently unable to sync notes directly to another device. However, it is possible to transfer the backup of notes to another device, and then restore to backup so your notes will overwrite on another device. Below are the steps for how to transfer notes from device A to device B.
1) Create a backup on device A first.
Then, please connect device A to your PC by using the USB C cable. Open the "note" folder
Copy the backup file and paste it onto the desktop
Then, please connect your device B to your PC and get to the same folder directory (if no backup folder under the "note" folder, you could create the "backup" and "local" folder). Then transfer this backup folder to device B
On your device B, go to the note and click "Option Settings"
Finally, you have transferred your notes from device A to device B.