Hi, I did a full backup with Titanium Backup on Fairphone 1.8 without unified storage to a second sd-card. Then flashed my phone back to 1.6, let the Fairphone Updater do his work to 1.8.5 with unified storage and installation of google play store. Then I installed Titanium Backup from Play Store and started the restore of all all system and user data.
I had no problems. Everything works fine. I just had to activate the sync of all my accounts manually.
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