No hay manera con Google Calendar

Squeeze dijo:

Lo dicho, llevo un par de días (con un par de flasheos de regalo) y ya me está tocando la moral.
No hay manera de que sincronice los dichosos calendarios.
Uso la rom stock S150 con TWRP 2.5.0.0, root y gapps (20121011), y limpia de morralla china, a saber:

Spoiler

/system/app/116114.apk
/system/app/LenovoCalendar.apk
/system/app/LeNote.apk
/system/app/LenovoSOS.apk
/system/app/LenovoSafeCenter.apk
/system/app/SogouInput.apk
/system/app/Wostore.apk
/system/app/LenovoSinaWeather_Phone_SDK2.3_v3.79_QHD_20130123_signed.apk
/system/app/LenovoSinaWeatherThemeA820Jianyue_signed.apk
/system/app/LenovoSinaWeatherThemeA820Jiguang_signed.apk
/system/app/LenovoSinaWeatherThemeA820Moren_signed.apk
/system/app/LenovoSinaWeatherThemeA820Victoria_signed.apk
/system/app/LeCloudHelper.apk
/system/app/LenovoAppStore.apk
/system/app/LenovoServiceV2.3.71.apk
/system/app/UnicomClient.apk
/system/app/Womail.apk
/system/app/Wo3G.apk
/system/app/UserCenter-Lenovo-4.0-phone.apk
/system/app/Idea123.apk
/system/app/Tutorial.apk
/system/app/DeviceRegister.apk
/system/app/LenovoCalendarProvider.apk
/system/app/LenovoSearch.apk
/system/app/Lessons.apk
/system/app/LSF-Device-Lenovo-4.0-Phone.apk
/system/app/LSF-Pay-Lenovo-4.0-Phone.apk
/system/app/LSF-User-Lenovo-4.0-Phone.apk
/system/app/CalendarImporter.apk
/system/app/FileBrowser.apk
/system/app/LenovoUEService.apk
/system/vendor/operator/app/BaiduMusic.apk
/system/vendor/operator/app/BaiduSearch.apk
/system/vendor/operator/app/Baoshi.apk
/system/vendor/operator/app/CrazyJet.apk
/system/vendor/operator/app/GaodeMap.apk
/system/vendor/operator/app/KingsoftWPS.apk
/system/vendor/operator/app/LenovoSafePlugin.apk
/system/vendor/operator/app/MeituShow.apk
/system/vendor/operator/app/MobileQQ.apk
/system/vendor/operator/app/QQBrowser.apk
/system/vendor/operator/app/ReadingJoy.apk
/system/vendor/operator/app/SinaWeiboCU.apk
/system/vendor/operator/app/SohuNews.apk
/system/vendor/operator/app/YoudaoDict.apk
/system/vendor/operator/app/YoukuVideo.apk
/system/app/Wo3G.odex
/system/app/CalendarImporter.odex

He probado a instalar calendarprovider.apk y calendarimporter.apk (sacados de la rom custom del foro, y con los permisos adecuados rw-r--r--) y nada. Google Calendar inicia pero cuando le doy a seleccionar calendarios se queda en "Loading" perpetuo. Además, en cuentas, me sale la sincronización con error (en rojo), y dentro no hay rastro de calendar (si está gmail, browser, app data, contacts, etc).

¿Alguna idea de que puede estar mal?

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