[Miscellaneous Android Development] Ashby7:
It seems to me not to root Acer Liquid S1 (S510) Prescribed ID at line 1282:

Now displays this error:

[chelios@chelios-desktop ~/acer_iconia_toolkit_v0.9.4 $ ./toolkit.sh -d

======= Acer Iconia Toolkit v0.9.4 =======

Which device do you have?

[1] Acer Iconia B1-A71

[2] Acer Iconia A1-810 / A1-811 / A3-A10 / B1-711 / B1-720

[3] Acer Iconia B1-710 / B1-A710

[4] Acer Liquid S1 (S510 / A10)

[Q] Quit

Enter a selection: 4

======= Acer Liquid S1 (S510 / A10) Toolkit v0.9.4 =======

What do you want to do?

[1] Root

[2] Unroot

[3] Internal 2 External (needs root)

[4] Odex (needs root)

[5] Pull system.img.gz from tablet

[Q] Quit

Enter a selection: 1

What do you want to do?

[1] Root from scratch (without prerooted system.img.gz).

[2] Root with prerooted system.img.gz (must be placed in folder 'system_image' on your PC)

[Q] Quit

Enter a selection: 1

Do you want to make your external SDCard writeable?

[Y]es

[N]o

[Q]uit

Enter a selection: y

Do you want to do everything all at once (= do not wait for input before restoring system.img?

Make sure to:

1. Plugin both computer and device into power

2. Do not touch the device

3. Do not EVER disconnect the USB of the device

4. Make sure to wait till everything succeeds!

Failure to do so may cause disconnect in the restore procedure which can brick the device!

[Y]es

[N]o

[Q]uit

Enter a selection: y

================== Root =================

Before we can start, please do following:

1. Plug-In your Acer Liquid S1 (S510 / A10) into this PC.

2. Enable USB Debugging Mode by going into Settings -> Developer Tools.

3. Keep your device plugged in until it's finally unrooted, or this procedure is aborted!

If you sucessfully applied the steps above, we can now start.

You can always abort by pressing Ctrl+C.

The following procedures can take up to 30 minutes!

To finally play back the rooted system.img.gz a confirmation will be needed then.

[ENTER] Continue

[Q] Quit

Enter a selection:

[sudo] password for chelios:

2016/02/13 22:49:02: Trying to establish ADB Connection...

List of devices attached

33559283864	device

2016/02/13 22:49:02: ADB Connection to your Acer Liquid S1 (S510 / A10) successful.

2016/02/13 22:49:02: Copying Busybox to your Acer Liquid S1 (S510 / A10).

4811 KB/s (1062992 bytes in 0.215s)

2016/02/13 22:49:03: Successfully copied Busybox to your Acer Liquid S1 (S510 / A10).

2016/02/13 22:49:03: Starting Telnet server on your Acer Liquid S1 (S510 / A10).

POWER MANAGER (dumpsys power)

Power Manager State:

mDirty=0x0

mWakefulness=Awake

mIsPowered=true

mPlugType=2

mBatteryLevel=100

mBatteryLevelWhenDreamStarted=0

mDockState=0

mStayOn=false

mProximityPositive=false

mBootCompleted=true

mSystemReady=true

mWakeLockSummary=0x0

mUserActivitySummary=0x1

mRequestWaitForNegativeProximity=false

mSandmanScheduled=false

mLastWakeTime=969833 (635571 ms ago)

mLastSleepTime=962813 (642591 ms ago)

mSendWakeUpFinishedNotificationWhenReady=false

mSendGoToSleepFinishedNotificationWhenReady=false

mLastUserActivityTime=1576568 (28836 ms ago)

mLastUserActivityTimeNoChangeLights=0 (1605404 ms ago)

mDisplayReady=true

mHoldingWakeLockSuspendBlocker=false

mHoldingDisplaySuspendBlocker=true

Settings and Configuration:

mWakeUpWhenPluggedOrUnpluggedConfig=true

mSuspendWhenScreenOffDueToProximityConfig=true

mDreamsSupportedConfig=true

mDreamsEnabledByDefaultConfig=true

mDreamsActivatedOnSleepByDefaultConfig=false

mDreamsActivatedOnDockByDefaultConfig=true

mDreamsEnabledSetting=true

mDreamsActivateOnSleepSetting=false

mDreamsActivateOnDockSetting=true

mScreenOffTimeoutSetting=2147483647

mMaximumScreenOffTimeoutFromDeviceAdmin=2147483647 (enforced=false)

mStayOnWhilePluggedInSetting=0

mScreenBrightnessSetting=255

mScreenAutoBrightnessAdjustmentSetting=0.0

mScreenBrightnessModeSetting=0

mScreenBrightnessOverrideFromWindowManager=-1

mUserActivityTimeoutOverrideFromWindowManager=-1

mTemporaryScreenBrightnessSettingOverride=-1

mTemporaryScreenAutoBrightnessAdjustmentSettingOverride=NaN

mScreenBrightnessSettingMinimum=30

mScreenBrightnessSettingMaximum=255

mScreenBrightnessSettingDefault=102

Screen off timeout: 2147483647 ms

Screen dim duration: 7000 ms

Wake Locks: size=0

Suspend Blockers: size=4

PowerManagerService.WakeLocks: ref count=0

PowerManagerService.Display: ref count=1

PowerManagerService.Broadcasts: ref count=0

PowerManagerService.WirelessChargerDetector: ref count=0

Screen On Blocker: held=false, mNestCount=0

Display Blanker: blanked=false

Display Controller Locked State:

mDisplayReadyLocked=true

mPendingRequestLocked=screenState=2, useProximitySensor=false, forceProximitySensorEnable=false, forceWakeUpEnable=false, screenBrightness=255, screenAutoBrightnessAdjustment=0.0, useAutoBrightness=false, useEcoBrightness=false, blockScreenOn=false

mPendingRequestChangedLocked=false

mPendingWaitForNegativeProximityLocked=false

mPendingUpdatePowerStateLocked=false

Display Controller Configuration:

mScreenBrightnessDimConfig=20

mScreenBrightnessRangeMinimum=20

mScreenBrightnessRangeMaximum=255

mUseSoftwareAutoBrightnessConfig=true

mScreenAutoBrightnessSpline=[(0.0, 0.11764706: 0.012254903), (16.0, 0.3137255: 0.0066409903), (100.0, 0.4: 8.194211E-4), (600.0, 0.7058824: 3.6715687E-4), (3000.0, 1.0: 1.2254901E-4)]

mLightSensorWarmUpTimeConfig=0

Display Controller Thread State:

mPowerRequest=screenState=2, useProximitySensor=false, forceProximitySensorEnable=false, forceWakeUpEnable=false, screenBrightness=255, screenAutoBrightnessAdjustment=0.0, useAutoBrightness=false, useEcoBrightness=false, blockScreenOn=false

mWaitingForNegativeProximity=false

mProximitySensor={Sensor name="APDS9930 Proximity Sensor", vendor="Avago", version=1, type=8, maxRange=1.0, resolution=1.0, power=0.13, minDelay=0}

mProximitySensorEnabled=false

mProximityThreshold=1.0

mProximity=Unknown

mPendingProximity=Unknown

mPendingProximityDebounceTime=-1 (1605408 ms ago)

mScreenOffBecauseOfProximity=false

mLightSensor={Sensor name="APDS9930 Light Sensor", vendor="Avago", version=1, type=5, maxRange=10240.0, resolution=1.0, power=0.13, minDelay=0}

mLightSensorEnabled=false

mLightSensorEnableTime=0 (1605407 ms ago)

mAmbientLux=0.0

mAmbientLuxValid=false

mLastObservedLux=0.0

mLastObservedLuxTime=0 (1605407 ms ago)

mRecentLightSamples=0

mRecentShortTermAverageLux=0.0

mRecentLongTermAverageLux=0.0

mDebounceLuxDirection=0

mDebounceLuxTime=0 (1605408 ms ago)

mScreenAutoBrightness=-1

mUsingScreenAutoBrightness=false

mLastScreenAutoBrightnessGamma=1.0

mTwilight.getCurrentState()=null

mElectronBeamOnAnimator.isStarted()=false

mElectronBeamOffAnimator.isStarted()=false

Display Power State:

mScreenOn=true

mScreenBrightness=255

mScreenReady=true

mScreenUpdatePending=false

mElectronBeamPrepared=false

mElectronBeamLevel=1.0

mElectronBeamReady=true

mElectronBeamDrawPending=false

Photonic Modulator State:

mPendingOn=true

mPendingBacklight=255

mActualOn=true

mActualBacklight=255

mChangeInProgress=false

Electron Beam State:

mPrepared=false

mMode=1

mDisplayLayerStack=0

mDisplayWidth=720

mDisplayHeight=1280

mSurfaceVisible=false

mSurfaceAlpha=0.0

Wireless Charger Detector State:

mGravitySensor=null

mPoweredWirelessly=false

mAtRest=false

mRestX=0.0, mRestY=0.0, mRestZ=0.0

mDetectionInProgress=false

mDetectionStartTime=0 (never)

mMustUpdateRestPosition=false

mTotalSamples=0

mMovingSamples=0

mFirstSampleX=0.0, mFirstSampleY=0.0, mFirstSampleZ=0.0

mLastSampleX=0.0, mLastSampleY=0.0, mLastSampleZ=0.0

2016/02/13 22:49:04: PLEASE UNLOCK THE SCREEN OF YOUR TABLET!

[ENTER] Continue

[Q] Quit

Enter a selection:

The screen I naturally turned for 30 minutes, did not help. :(

Firmware Acer_AV0K0_S510_RV19RC01_WW_GEN1_user_signed