近期，我弄了一台电信的 MV310 机顶盒，并依照网上的教程对其进行了刷机操作，期间下载了九彩固件。然而，在使用一段时间后，每次开机都会弹出升级界面，而且无法关掉，导致无法正常使用。
为寻求解决之法，我找到了一篇名为“九彩固件升级提示揭秘”的帖子。该帖通过对固件进行反编译，深入分析了固件升级的原因及具体代码。简而言之，九彩在代码中设置了一个计数器，当机顶盒运行一段时间后，便会弹出升级窗口。
图片引用自文章：https://www.52pojie.cn/thread-1883700-1-1.html
依此思路，需对刷机包进行反编译并修改相应代码。但本人缺少反编译工具，数次尝试刷机均未成功。于是，我思考能否通过 ADB 来解决这一问题，首先想到的便是尝试禁止白屏应用的启动。
首先，将机顶盒开启开发者模式，开启 ADB 调试，并确保其与电脑处于同一局域网内进行连接。接着，将界面停留在白屏位置，运行以下代码：[PowerShell] 纯文本查看 复制代码 adb shell dumpsys activity activities
以下是输出的内容：[PowerShell] 纯文本查看 复制代码 ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities)
Stack #0:
Task id #1
* TaskRecord{41ee52a0 #1 A=com.tvpusher.gklauncher U=0 sz=1}
numActivities=1 rootWasReset=false userId=0 mTaskType=1 numFullscreen=1 mOnTopOfHome=false
affinity=com.tvpusher.gklauncher
intent={act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.tvpusher.gklauncher/.mvp.ui.activity.WelcomeActivity}
realActivity=com.tvpusher.gklauncher/.mvp.ui.activity.WelcomeActivity
Activities=[ActivityRecord{42051038 u0 com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty t1}]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@41ce2258 lastDescription=null
lastActiveTime=8142 (inactive for 994s)
* Hist #0: ActivityRecord{42051038 u0 com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty t1}
packageName=com.tvpusher.gklauncher processName=com.tvpusher.gklauncher
launchedFromUid=10013 launchedFromPackage=com.tvpusher.gklauncher userId=0
app=ProcessRecord{41ee6650 2387:com.tvpusher.gklauncher/u0a13}
Intent { flg=0x400000 cmp=com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty }
frontOfTask=true task=TaskRecord{41ee52a0 #1 A=com.tvpusher.gklauncher U=0 sz=1}
taskAffinity=com.tvpusher.gklauncher
realActivity=com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty
baseDir=/system/app/yyzm8.9.apk
dataDir=/data/data/com.tvpusher.gklauncher
stateNotNeeded=false componentSpecified=true mActivityType=1
compat={160dpi always-compat} labelRes=0x7f100029 icon=0x7f0e0044 theme=0x7f11018a
config={1.0?mcc?mnc zh_CN ldltr sw720dp w1280dp h720dp 160dpi xlrg long land television -touch -keyb/v/h dpad/v s.4}
launchFailed=false launchCount=0 lastLaunchTime=-16m35s738ms
haveState=true icicle=Bundle[mParcelledData.dataSize=3632]
state=STOPPED stopped=true delayedResume=false finishing=false
keysPaused=false inHistory=true visible=false sleeping=false idle=true
fullscreen=true noDisplay=false immersive=false launchMode=2
frozenBeforeDestroy=false thumbnailNeeded=false forceNewConfig=false
mActivityType=HOME_ACTIVITY_TYPE
thumbHolder: 41ee52a0 bm=android.graphics.Bitmap@41ce2258 desc=null
Running activities (most recent first):
TaskRecord{41ee52a0 #1 A=com.tvpusher.gklauncher U=0 sz=1}
Run #0: ActivityRecord{42051038 u0 com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty t1}
mLastPausedActivity: ActivityRecord{42051038 u0 com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty t1}
Stack #1:
Task id #3
* TaskRecord{41f3bfd0 #3 A=com.ex.service U=0 sz=1}
numActivities=1 rootWasReset=false userId=0 mTaskType=0 numFullscreen=1 mOnTopOfHome=true
affinity=com.ex.service
intent={flg=0x10000000 cmp=com.ex.service/.Txtactivity}
realActivity=com.ex.service/.Txtactivity
Activities=[ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}]
askedCompatMode=false
lastThumbnail=null lastDescription=null
lastActiveTime=870241 (inactive for 132s)
* Hist #0: ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}
packageName=com.ex.service processName=com.ex.service
launchedFromUid=10011 launchedFromPackage=com.ex.service userId=0
app=ProcessRecord{41fe73e8 2405:com.ex.service/u0a11}
Intent { flg=0x10000000 cmp=com.ex.service/.Txtactivity }
frontOfTask=true task=TaskRecord{41f3bfd0 #3 A=com.ex.service U=0 sz=1}
taskAffinity=com.ex.service
realActivity=com.ex.service/.Txtactivity
baseDir=/system/priv-app/SystemManager.apk
dataDir=/data/data/com.ex.service
stateNotNeeded=false componentSpecified=true mActivityType=0
compat={160dpi always-compat} labelRes=0x7f0e001b icon=0x0 theme=0x7f0f0186
config={1.0?mcc?mnc zh_CN ldltr sw720dp w1280dp h720dp 160dpi xlrg long land television -touch -keyb/v/h dpad/v s.4}
launchFailed=false launchCount=0 lastLaunchTime=-16m36s771ms
haveState=false icicle=null
state=RESUMED stopped=false delayedResume=false finishing=false
keysPaused=false inHistory=true visible=true sleeping=false idle=true
fullscreen=true noDisplay=false immersive=false launchMode=0
frozenBeforeDestroy=false thumbnailNeeded=false forceNewConfig=false
mActivityType=APPLICATION_ACTIVITY_TYPE
thumbHolder: 41f3bfd0 bm=null desc=null
waitingVisible=false nowVisible=true lastVisibleTime=-2m12s490ms
Running activities (most recent first):
TaskRecord{41f3bfd0 #3 A=com.ex.service U=0 sz=1}
Run #0: ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}
mResumedActivity: ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}
mLastPausedActivity: ActivityRecord{41f82368 u0 com.fiberhome.settings/.MainActivity t9 f}
mFocusedActivity: ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}
mDismissKeyguardOnNextActivity=false
mFocusedStack=ActivityStack{4200d170 stackId=1, 1 tasks} mStackState=STACK_STATE_HOME_IN_BACK
mSleepTimeout=false
mCurTaskId=9
mUserStackInFront={}
Recent tasks:
* Recent #0: TaskRecord{41f3bfd0 #3 A=com.ex.service U=0 sz=1}
numActivities=1 rootWasReset=false userId=0 mTaskType=0 numFullscreen=1 mOnTopOfHome=true
affinity=com.ex.service
intent={flg=0x10000000 cmp=com.ex.service/.Txtactivity}
realActivity=com.ex.service/.Txtactivity
Activities=[ActivityRecord{41d14248 u0 com.ex.service/.Txtactivity t3}]
askedCompatMode=false
lastThumbnail=null lastDescription=null
lastActiveTime=870241 (inactive for 132s)
* Recent #1: TaskRecord{420ab148 #9 I=com.fiberhome.settings/.MainActivity U=0 sz=0}
intent={cmp=com.fiberhome.settings/.MainActivity}
realActivity=com.fiberhome.settings/.MainActivity
Activities=[]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@41ce2258 lastDescription=null
lastActiveTime=870236 (inactive for 132s)
* Recent #2: TaskRecord{420e3978 #8 I=com.fiberhome.settings/.AuthActivity U=0 sz=0}
intent={act=android.intent.action.MAIN flg=0x10000000 cmp=com.fiberhome.settings/.AuthActivity}
realActivity=com.fiberhome.settings/.AuthActivity
Activities=[]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@41ce2258 lastDescription=null
lastActiveTime=853653 (inactive for 149s)
* Recent #3: TaskRecord{41ee52a0 #1 A=com.tvpusher.gklauncher U=0 sz=1}
numActivities=1 rootWasReset=false userId=0 mTaskType=1 numFullscreen=1 mOnTopOfHome=false
affinity=com.tvpusher.gklauncher
intent={act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.tvpusher.gklauncher/.mvp.ui.activity.WelcomeActivity}
realActivity=com.tvpusher.gklauncher/.mvp.ui.activity.WelcomeActivity
Activities=[ActivityRecord{42051038 u0 com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty t1}]
askedCompatMode=false
lastThumbnail=android.graphics.Bitmap@41ce2258 lastDescription=null
lastActiveTime=8142 (inactive for 994s)
从上述输出中可以看出，存在两个任务栈。第一个任务栈中有一个活动，即主屏幕活动；第二个任务栈中也有一个活动，是当前正在前台运行的活动。这意味着com.ex.service/.Txtactivity是当前用户正在使用的活动，而com.tvpusher.gklauncher/.mvp.ui.activity.MainActivty则是主屏幕活动。
计数器的代码位于com.tvpusher.gklauncher中。然而，此为机顶盒的主程序，既不能关闭也无法删除，否则机顶盒将无法使用。因此，我选择禁用其调用的程序，具体代码如下：[PowerShell] 纯文本查看 复制代码 adb shell pm disable-user com.ex.service
adb shell pm disable-user com.exs.service
至此，问题得以解决。 | 
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发表于 2024-10-25 16:54
发表于 2024-10-28 08:44
