# Trying to downgrade / upgrade **URL:** \ **Category:** CyanLabs Update Support\ **Tags:** eu, oem, nav, SYNC3, APIM, pre-my20\ **Created:** [11 September 2026 22:32 UTC](https://community.cyanlabs.net/t/trying-to-downgrade-upgrade/27898 "2026-09-11T22:32:03Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![RhinoNeil](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/r/58956e/32.png) [@RhinoNeil](https://community.cyanlabs.net/u/RhinoNeil)\ **Post date:** [11 September 2026 22:32 UTC](https://community.cyanlabs.net/t/trying-to-downgrade-upgrade/27898/1 "2026-09-11T22:32:03Z")
Hello - trying to downgrade then upgrade to version manually using a Mac laptop. Have followed instructions to the letter but having no luck. I’ve used the configurator to try downgrading current version (stock, 3.4.23188, F8 Maps) so I can either reinstall or upgrade as I’m having trouble where SYNC3 doesn’t remember any setting when turning off ignition. I had used the Ford direct wifi access from the unit and now it’s worse than before. Have tried disconnecting battery, soft & hard resets with no luck! * * * **SYNC Region:** EU **Navigation Variant:** Nav **Manufacturer Year:** Pre MY20 **Install Type:** OEM **Old SYNC Version:** 3.4.23188 **New SYNC Version:** 3.4.23188 **Do you have a error message, if so what is it?** Various depending on version I’m trying to use - 3.4.26057 generates ERR\_PKG04, 3.4.19101 generates ERR\_PKG05 **Update Method:** CyanLabs Manual Method ---
**Author:** ![system](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/s/bcef8e/32.png) [@system](https://community.cyanlabs.net/u/system)\ **Post date:** [11 October 2026 22:33 UTC](https://community.cyanlabs.net/t/trying-to-downgrade-upgrade/27898/2 "2026-10-11T22:33:00Z")
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