[Xposed Framework Modules] _jis_:
Selected USB mode is still not persistent for me, but error.log is more clean now. I connected N7II to PC, selected MTP mode, opened appropriate folder on PC, disconnected, connected again, but now I have only USB charging. MTP selection is forgotten as in plain MM.

12-17 16:43:58.401 I/Xposed ( 231): -----------------
12-17 16:43:58.401 I/Xposed ( 231): Starting Xposed version 78, compiled for SDK 23
12-17 16:43:58.401 I/Xposed ( 231): Device: Nexus 7 (asus), Android version 6.0 (SDK 23)
12-17 16:43:58.401 I/Xposed ( 231): ROM: MRA58V
12-17 16:43:58.401 I/Xposed ( 231): Build fingerprint: google/razor/flo:6.0/MRA58V/2324235:user/release-keys
12-17 16:43:58.401 I/Xposed ( 231): Platform: armeabi-v7a, 32-bit binary, system server: yes
12-17 16:43:58.401 I/Xposed ( 231): SELinux enabled: yes, enforcing: yes
12-17 16:43:58.410 I/Xposed ( 231): -----------------
12-17 16:43:58.411 I/Xposed ( 231): Added Xposed (/system/framework/XposedBridge.jar) to CLASSPATH
12-17 16:43:58.957 I/Xposed ( 231): Detected ART runtime
12-17 16:43:59.014 I/Xposed ( 231): Found Xposed class de/robv/android/xposed/XposedBridge, now initializing
12-17 16:43:59.457 I/Xposed ( 231): Loading modules from /data/app/com.ceco.marshmallow.gravitybox-2/base.apk
12-17 16:43:59.798 I/Xposed ( 231): Loading class com.ceco.marshmallow.gravitybox.GravityBox
12-17 16:43:59.832 I/Xposed ( 231): GB:Hardware: flo
12-17 16:43:59.832 I/Xposed ( 231): GB:Product: razor
12-17 16:43:59.832 I/Xposed ( 231): GB:Device manufacturer: asus
12-17 16:43:59.832 I/Xposed ( 231): GB:Device brand: google
12-17 16:43:59.832 I/Xposed ( 231): GB:Device model: Nexus 7
12-17 16:43:59.844 I/Xposed ( 231): GB:Device type: tablet
12-17 16:43:59.845 I/Xposed ( 231): GB:Is MTK device: false
12-17 16:43:59.845 I/Xposed ( 231): GB:Is Xperia device: false
12-17 16:43:59.845 I/Xposed ( 231): GB:Is Moto XT device: false
12-17 16:43:59.847 I/Xposed ( 231): GB:Has Lenovo custom UI: false
12-17 16:43:59.851 I/Xposed ( 231): GB:Has telephony support: false
12-17 16:43:59.851 I/Xposed ( 231): GB:Has Gemini support: false
12-17 16:43:59.851 I/Xposed ( 231): GB:Android SDK: 23
12-17 16:43:59.851 I/Xposed ( 231): GB:Android Release: 6.0
12-17 16:43:59.851 I/Xposed ( 231): GB:ROM: MRA58V
12-17 16:43:59.917 I/Xposed ( 231): Loading modules from /data/app/ma.wanam.youtubeadaway-2/base.apk
12-17 16:43:59.936 I/Xposed ( 231): Loading class ma.wanam.youtubeadaway.Xposed
12-17 16:43:59.938 I/Xposed ( 231): Loading modules from /data/app/com.germainz.activityforcenewtask-1/base.apk
12-17 16:43:59.970 I/Xposed ( 231): Loading class com.germainz.activityforcenewtask.XposedMod
12-17 16:43:59.986 I/Xposed ( 231): Loading modules from /data/app/rayyan.black.fem.ind.runner-2/base.apk
12-17 16:44:00.085 I/Xposed ( 231): Loading class rayyan.black.fem.ind.runner.UUSBF
12-17 16:44:00.126 I/Xposed ( 231): Loading modules from /data/app/de.robv.android.xposed.mods.appsettings-1/base.apk
12-17 16:44:00.162 I/Xposed ( 231): Loading class de.robv.android.xposed.mods.appsettings.XposedMod
12-17 16:44:00.183 I/Xposed ( 231): Loading modules from /data/app/com.germainz.crappalinks-1/base.apk
12-17 16:44:00.209 I/Xposed ( 231): Loading class com.germainz.crappalinks.CrappaLinks
12-17 16:44:00.221 I/Xposed ( 231): Loading modules from /data/app/de.theknut.xposedgelsettings-1/base.apk
12-17 16:44:00.331 I/Xposed ( 231): Loading class de.theknut.xposedgelsettings.hooks.ResourceReplacements
12-17 16:44:00.361 I/Xposed ( 231): Loading class de.theknut.xposedgelsettings.hooks.GELSettings
12-17 16:44:00.376 I/Xposed ( 231): Loading modules from /data/app/com.p1ngu1n.playstorechangelog-1/base.apk
12-17 16:44:00.396 I/Xposed ( 231): Loading class com.p1ngu1n.playstorechangelog.PlayStoreChangelog
12-17 16:44:25.984 I/Xposed ( 1005): UUSBF: com.android.settings.deviceinfo.UsbBackend is not available
12-17 16:45:13.209 I/Xposed ( 4641): UUSBF: com.android.settings.deviceinfo.UsbBackend is not available
12-17 16:45:55.225 I/Xposed ( 5416): UUSBF: com.android.settings.deviceinfo.UsbBackend is not available
12-17 16:45:55.340 I/Xposed ( 5416): UUSBF: getCurrentFunction>>>>>com.android.settings.deviceinfo.UsbModeChooserActivity@8811247
12-17 16:45:57.324 I/Xposed ( 5416): UUSBF: setCurrentFunction=com.android.settings.deviceinfo.UsbModeChooserActivity@8811247
12-17 16:45:57.325 I/Xposed ( 5416): UUSBF: value=1