Thanks for the article, you need to correct the link "Synchronize data offline".
Tell me, please, why it is impossible to download the synchronization on the site
https://neo.org/download, writes a network error.
You have the file "chain.acc.zip", you can send it to me or put the file here, can someone have it?
If you have the "old" NEO-GUI wallet installed then just copy the CHAIN folder from the old wallet into the new wallet folder, this will speed up syncing dramatically.