[Android Q&A, Help & Troubleshooting] sansanc:
Hello guys. Xposed not working on this phone. I'm using these files:

XposedInstaller_3.0_alpha4.apk

xposed-v66-sdk21-arm64.zip

xposed-uninstaller-arm64.zip

First, it bootlooped, the log showed:

Cannot load any modules because /data/data/de.robv.android.xposed.installer/conf/modules.list was not found

So i thought installing Gravitybox for Lollipop, would fill that file. But it gave me the same error, so i manually wrote Gravitybox's apk file location on modules.list And now it shows:

07-10 23:22:19.842 I/Xposed ( 4353): -----------------

07-10 23:22:19.842 I/Xposed ( 4353): Starting Xposed version 66, compiled for SDK 21

07-10 23:22:19.842 I/Xposed ( 4353): Device: X600 (Letv), Android version 5.0.2 (SDK 21)

07-10 23:22:19.842 I/Xposed ( 4353): ROM: ABXCNOP5000306151S release-keys

07-10 23:22:19.842 I/Xposed ( 4353): Build fingerprint: Letv/乐视超级手机1/x600:5.0.2/ABXCNOP5000306151S/48:user/release-keys

07-10 23:22:19.842 I/Xposed ( 4353): Platform: arm64-v8a, 64-bit binary, system server: yes

07-10 23:22:19.842 I/Xposed ( 4353): SELinux enabled: yes, enforcing: yes

07-10 23:22:20.853 I/Xposed ( 4353): -----------------

07-10 23:22:20.853 I/Xposed ( 4353): Added Xposed (/system/framework/XposedBridge.jar) to CLASSPATH

07-10 23:22:21.011 I/Xposed ( 4353): Detected ART runtime

07-10 23:22:21.013 I/Xposed ( 4353): Found Xposed class de/robv/android/xposed/XposedBridge, now initializing

07-10 23:22:21.122 I/Xposed ( 4353): Loading modules from /data/app/com.ceco.lollipop.gravitybox-1/base.apk

07-10 23:22:21.276 I/Xposed ( 4353): Loading class com.ceco.lollipop.gravitybox.GravityBox

07-10 23:22:21.287 I/Xposed ( 4353): GB:Hardware: mt6795

07-10 23:22:21.287 I/Xposed ( 4353): GB:Product: 乐视超级手机1

07-10 23:22:21.287 I/Xposed ( 4353): GB:Device manufacturer: Letv

07-10 23:22:21.287 I/Xposed ( 4353): GB:Device brand: Letv

07-10 23:22:21.287 I/Xposed ( 4353): GB:Device model: X600

07-10 23:22:21.290 I/Xposed ( 4353): GB:Device type: phone

07-10 23:22:21.290 I/Xposed ( 4353): GB:Is MTK device: true

07-10 23:22:21.290 I/Xposed ( 4353): GB:Is Xperia device: false

07-10 23:22:21.290 I/Xposed ( 4353): GB:Is Moto XT device: false

07-10 23:22:21.291 I/Xposed ( 4353): GB:Has Lenovo custom UI: false

07-10 23:22:21.291 I/Xposed ( 4353): GB:Has telephony support: true

07-10 23:22:21.294 I/Xposed ( 4353): GB:Has Gemini support: true

07-10 23:22:21.294 I/Xposed ( 4353): GB:Android SDK: 21

07-10 23:22:21.294 I/Xposed ( 4353): GB:Android Release: 5.0.2

07-10 23:22:21.294 I/Xposed ( 4353): GB:ROM: ABXCNOP5000306151S release-keys

07-10 23:22:21.329 E/Xposed ( 4353): java.lang.NoSuchMethodError: com.android.internal.telephony.uicc.UiccController#setNotification(int)#exact

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findMethodExact(XposedHelpers.java:181)

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:131)

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:138)

07-10 23:22:21.329 E/Xposed ( 4353):	at com.ceco.lollipop.gravitybox.PhoneWrapper.initZygote(PhoneWrapper.java:180)

07-10 23:22:21.329 E/Xposed ( 4353):	at com.ceco.lollipop.gravitybox.GravityBox.initZygote(GravityBox.java:63)

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.loadModule(XposedBridge.java:464)

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.loadModules(XposedBridge.java:413)

07-10 23:22:21.329 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:103)

07-10 23:22:21.385 E/Xposed ( 4353): de.robv.android.xposed.XposedHelpers$ClassNotFoundError: java.lang.ClassNotFoundException: com.mediatek.op.telephony.ServiceStateExt

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findClass(XposedHelpers.java:54)

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:138)

07-10 23:22:21.385 E/Xposed ( 4353):	at com.ceco.lollipop.gravitybox.ModTelephony.initZygote(ModTelephony.java:80)

07-10 23:22:21.385 E/Xposed ( 4353):	at com.ceco.lollipop.gravitybox.GravityBox.initZygote(GravityBox.java:67)

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.loadModule(XposedBridge.java:464)

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.loadModules(XposedBridge.java:413)

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:103)

07-10 23:22:21.385 E/Xposed ( 4353): Caused by: java.lang.ClassNotFoundException: com.mediatek.op.telephony.ServiceStateExt

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.Class.classForName(Native Method)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.Class.forName(Class.java:308)

07-10 23:22:21.385 E/Xposed ( 4353):	at external.org.apache.commons.lang3.ClassUtils.getClass(ClassUtils.java:823)

07-10 23:22:21.385 E/Xposed ( 4353):	at de.robv.android.xposed.XposedHelpers.findClass(XposedHelpers.java:52)

07-10 23:22:21.385 E/Xposed ( 4353):	... 6 more

07-10 23:22:21.385 E/Xposed ( 4353): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.mediatek.op.telephony.ServiceStateExt" on path: DexPathList[[zip file "/system/framework/XposedBridge.jar"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]

07-10 23:22:21.385 E/Xposed ( 4353):	at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.ClassLoader.loadClass(ClassLoader.java:511)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.ClassLoader.loadClass(ClassLoader.java:469)

07-10 23:22:21.385 E/Xposed ( 4353):	... 10 more

07-10 23:22:21.385 E/Xposed ( 4353):	Suppressed: java.lang.ClassNotFoundException: com.mediatek.op.telephony.ServiceStateExt

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.Class.classForName(Native Method)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.BootClassLoader.findClass(ClassLoader.java:781)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)

07-10 23:22:21.385 E/Xposed ( 4353):	at java.lang.ClassLoader.loadClass(ClassLoader.java:504)

07-10 23:22:21.385 E/Xposed ( 4353):	... 11 more

07-10 23:22:21.385 E/Xposed ( 4353):	Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

This phone is running EUI, a custom UI from LeTV, but i do not think it's heavily customized, but what do i know?... Will xposed only work if this ROM is deodex or something? Anything more i can do to debug/troubleshoot this?