# IOS Sync\>Start Sync Does nothing

**URL:** <https://discuss.zetetic.net/t/ios-sync-start-sync-does-nothing/2539>\
**Category:** Issues\
**Created:** [December 19, 2017, 4:22pm UTC](https://discuss.zetetic.net/t/ios-sync-start-sync-does-nothing/2539 "2017-12-19T16:22:01Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![mmoore](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.zetetic.net/mmoore/32/858_2.png) [@mmoore](https://discuss.zetetic.net/u/mmoore)\
**Post date:** [December 19, 2017, 4:55pm UTC](https://discuss.zetetic.net/t/ios-sync-start-sync-does-nothing/2539/6 "2017-12-19T16:55:27Z")

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@clo2peter

You seem to be using an older version of Codebook. Could you update to the latest version: [Codebook for macOS 3.3.3 Released](https://discuss.zetetic.net/t/codebook-for-macos-3-3-3-released/2483)

I believe that version used Dropbox API v1 (which has now been fully deprecated). All the newer version of Codebook use Dropbox API v2.

Let me know if updating to the latest version resolves the issue for you.

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_[View the full topic](https://discuss.zetetic.net/t/ios-sync-start-sync-does-nothing/2539)._