How can I upgrade my Android Jar Dependencies?

I'm in the middle of making a commercial mobile game with AdMob advertising, under an advancing deadline.

After my desktop crashed and burned, I was forced to transfer the project to my crappy laptop, using Unity Collaborate (which is awesome).

Upon loading the project in Unity, I started to get several popups in Unity titled, 'Android Jar Dependencies', asking me whether I should Replace or Keep play-services-ads version 11.0.4 with version 10.2.6.

I have no interest in silencing these pop-ups (to do this, I would open the Android Resolver (Asset Store > Google > Android Resolver > Settings etc). Instead:

I want to update my Android Jar Dependencies to match those on my desktop (now being repaired) - ie. the latest version of the Dependencies.

In order to do this, I had the Android Studio / SDK update itself.

During the update process, my Comodo antivirus virtualised the silent_install_wrapper.bat for Intel Haxm installation and also virtualised the apksigner.jar.

I've tried to update the Haxm installation manually, but I don't know where to begin with the apksigner.jar.

Building the app while keeping the 11.0.4 files gives me this error (some details obscured to protect client & my machine):

 CommandInvokationFailure: Failed to sign APK package.
 C:\Android\sdk\build-tools\25.0.3\apksigner.bat sign --ks "I:/Unity/****.keystore" --ks-pass stdin  --ks-key-alias "****" --key-pass stdin  "C:\Users\***\Temp/StagingArea/Package.apk"
 
 stderr[
 'PWs' is not recognized as an internal or external command,
 operable program or batch file.
 Failed to load signer "signer #1"
 java.io.FileNotFoundException: I:\Unity\****.keystore (The system cannot find the path specified)
     at java.io.FileInputStream.open0(Native Method)
     at java.io.FileInputStream.open(Unknown Source)
     at java.io.FileInputStream.<init>(Unknown Source)
     at java.io.FileInputStream.<init>(Unknown Source)
     at com.android.apksigner.ApkSignerTool$SignerParams.loadKeyStoreFromFile(ApkSignerTool.java:733)
     at com.android.apksigner.ApkSignerTool$SignerParams.loadPrivateKeyAndCertsFromKeyStore(ApkSignerTool.java:636)
     at com.android.apksigner.ApkSignerTool$SignerParams.loadPrivateKeyAndCerts(ApkSignerTool.java:580)
     at com.android.apksigner.ApkSignerTool$SignerParams.access$200(ApkSignerTool.java:534)
     at com.android.apksigner.ApkSignerTool.sign(ApkSignerTool.java:229)
     at com.android.apksigner.ApkSignerTool.main(ApkSignerTool.java:87)
 Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
 ]
 stdout[
 Keystore password for signer #1: 
 ]
 exit code: 2
 UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
 UnityEditor.Android.Command.RunWithStdin (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg, System.String[] input)
 UnityEditor.Android.PostProcessor.Tasks.TasksCommon.Exec (System.String command, System.String args, System.String workingdir, System.String errorMsg, System.String[] stdin)
 UnityEditor.Android.PostProcessor.Tasks.BuildAPK.SignPackage (UnityEditor.Android.PostProcessor.PostProcessorContext context)
 UnityEditor.Android.PostProcessor.Tasks.BuildAPK.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
 UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

Again, I am not looking to suppress the error messages, nor am I looking to revert to 10.2.6 - I wish to update to 11.0.4 so I can build my app with AdMob.

I'm at my wits end here, folks. Can't find any useful solutions. Can anybody point me in the right direction?

Many thanks in advance,

--Rev